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Petrology & Geochemistry of Quarternary Volcanic Rocks From Makushin Volcano Central Aluetian 1985
UNA Alaska Energy Authority 032 LIBRARY COPY STATE OF ALASKA DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL & GEOPHYSICAL SURVEYS PETROLOGY AND GEOCHEMISTRY OF QUATERNARY VOLCANIC ROCKS FROM MAKUSHIN VOLCANO, CENTRAL ALEUTIAS ARC UNA O32 PETROLOGY AND GEOCHEMISTRY OF QUATERNARY VOLCANIC ROCKS FROM MAKUSHIN VOLCANO, CENTRAL ALEUTIAN ARC Petrology and Geochemistry of Quaternary Volcanic Rocks from Makushin Volcano, Central Aleutian Arc July, 1985 Final report submitted to the Alaska Power Authority under RSA #RS08-8227, Unalaska Geothermal Drilling. by C.J. Nye!, S.E. Swanson 2 and J.W. Reeder? 1 alaska Division of Geological and Geophysical Surveys, 794 University Avenue - base- ment, Fairbanks, Alaska 99701 2Department of Geology and Geophysics, University of Alaska, Fairbanks, Alaska 99701 3 Alaska Division of Geological and Geophysical Surveys, PO Box 772116, Eagle River, AK 99577 1.0 Introduction Unalaska Island is located in the eastern Aleutian Islands, and is in the approximate center of the Aleutian volcanic arc. Quaternary geology of the northern part of northern Unalaska Island is dominated by Makushin Volcano and its satellitic vents. Remnants of precursors to Makushin Volcano are scattered throughout northern Unalaska Island and indicate a record of subareal, flow dominated volcanism spanning at least the last million years. Makushin Volcano and its satellitic vents are the erupted products of the magmatic system which is the ultimate heat source for the Makushin geothermal system. A detailed study of the chemistry and petrology of these lavas and tuffs was undertaken in order to further the understanding of the geothermal system. The chemistry of erupted lavas pro- vides direct information about the physio-chemical Processes involved in magma produc- tion, and can be used to infer the existence of such things as long lived shallow magma chambers or regional geotherms which are sufficiently elevated to induce partial melting of the crust. If sufficient detail of chemistry and stratigraphy is known, then mass and heat flux through the crust as a function of time can also be inferred. In this study we report on chemical data from over 160 samples, and mineral com- Position data from 25 of these. These data support the following conclusions. 1) There has not been a single, shallow level magma chamber which has fed all vents over the course of their collective lifetimes. 2) The magmatic plumbing system feeding Makushin Volcano is of relatively small volume and is frequently resupplied by magma from a deeper chamber or cham- bers. 3) In the early Holocene several large, spatially separated magma bodies rose through the crust and erupted to form the satellitic centers and a several km3 lava eruption from Makushin Volcano (the Lava Ramp). This event represented a magma flux through the crust of at least an order of magnitude greater than typi- cal for Makushin Volcano. 4) A residue from the magma influx responsible for the formation of the Lava Ramp probably resides at a shallow depth beneath Makushin Volcano, and has been fractionating since the formation of the Lava Ramp. This shallow chamber is big- ger, more silicic and longer lived than normal for Makushin Volcano and is proba- bly the heat source for the geothermal field. 2.0 General Geology The general geology of northern Unalaska is described by Drewes and others (1961), Parmentier and others (1983) and Nye and others (1984). A brief distillation of these reports is presented here. The oldest rocks exposed on northern Unalaska Island are those of the Unalaska Formation. The dominant lithologic package of the Unalaska Formation consists of tuffs interbedded with minor volcaniclastic sediments, dikes, sills and flows. Stratigraphically lower parts of the formation are dominantly flows. In the Dutch Harbor area this Formation is lower Miocene in age (Lankford and Hill, 1979), but in the Makushin Volcano region it ranges into the Pliocene. The lower Unalaska Formation tuffs are intruded by a gabbronorite stock which is older than early Pliocene. The gabbro is unconformably overlain by the upper part of the Unalaska Formation. The gabbro is the geothermal reservoir host rock, probably because it is competent enough to maintain open fractures whereas the Unalaska Formation is not. Both the Unalaska Formation and the gabbronorite are unconformably overlain by the Quaternary volcanic rocks which are the subject of this report. These rocks are pre- dominately basalt and andesite flows, with subordinate dacite flows and pyroclastic rocks. The young volcanic rocks range in age from Pleistocene to Holocene and occur as caps on ridges above Pleistocene glacial valleys, young satellite vents, flank vents and pyroclastic deposits of northern Unalaska Island. Rocks units are only gently deformed, and, excepting the Holocene volcanoes, are heavily dissected by Pleistocene glaciation. .0 Pleistocene and Holocene Volcanic Rocks Pleistocene and Holocene volcanic rocks cover older rocks on the northern and ech portions of northern Unalaska Island (fig. 1). This section will discuss the petrol- ogy and chemistry of these volcanic rocks in detail. Pleistocene flows cap ridges over most of the northern half of northern Unalaska and form eroded pinnacles just east of Makushin Volcano. The modern volcanic field is dominated by Makushin Volcano, which is 2055 m high and a few tens to several tens of km? in volume. There are also several satellitic vents which, along with Makushin Volcano itself, form a broad SW-NE trending band (fig. 1). These vents are, from the SW, Pakushin Cone (about 1050 m, 1-2 km3), Sugarloaf (580 m), Table Top Mtn (800 m, about 1 km?) and Wide Bay Cone (about 640 m, about 0.5 km), There are also extremely small volume eruptive centers at Cape Wislow and on a linear fracture radiating from Makushin to the NW. Small explosion pits and cinder cones along this fracture are termed the Pt. Kadin Vents (Drewes and others, 1961). There is also a large volume (at least 5 km?3) package of coeruptive flows, termed the Lava Ramp, which erupted from Makushin Volcano and fill upper Makushin and Driftwood Valleys. 3.1 Rock Unit Nomenclature The Quaternary volcanic rocks of northern Unalaska Island have been assigned to two major lithologic units, QTve and Qhv, which correspond to chemically and mineralog- ically inhomogeneous and homogeneous deposits, respectively (Nye and others, 1984). These are roughly equivalent to the Makushin Volcanics and Eider Point Basalt of Drewes and others (1961). QTve refers to Tertiary (?) to latest Holocene lavas and pyroclastic rocks which have erupted from the Makushin polygenetic stratovolcano. As we show be- low, these eruptive products can be of extremely variable chemical composition and tex- ture even between adjacent flows. Qhv refers to large volume eruptions from smaller monogenetic vents over relatively short time spans and which are homogeneous in chemi- cal composition and texture (see below). While thé unit Qhv is not confined by the defi- nition to any particular time period, these lavas seem to be almost wholly early Holocene. We will show that the differences between QTvc and Qhv are as follows: QTve is made up eruptive products of a volcano which is relatively long lived, and whose shallow level plumbing system is of relatively low volume and is either intermittent or is fre- quently reinjected with new material that is different in some or all of the following: composition; temperature, T; partial pressure of water, PH,O; and oxygen fugacity, f O>. Frequent resupply or complete refilling of the relatively small volume shallow system with comparatively large volumes of new magma can produce dramatic changes in compo- sition on an eruption by eruption basis (see below). Qhv, on the other hand, is made up of eruptive products of short lived (monogenetic), relatively large volume, eruptions. These eruptions are usually, but not always, from satellite vents. Magmas in such eruptions are of fairly uniform composition because the shallow level plumbing system is short lived and therefore not reinjected. The major Qhv centers are Pakushin Cone, Table Top, Wide Bay Cone and what we call the Lava Ramp, which is the thick package of flows which issued from the summit or up- per east flank of Makushin and flowed down Driftwood Valley. Sugarloaf and the Point Kadin vents are smaller Qhv centers. 3.2 Sample Number Nomenclature Major, minor and trace element and phase chemistry are reported in appendices 1,2 and 3. Sample locations and schematic geology are reported on plate 1. A systematic numbering system ("map numbers” in the appendices) has been imposed on all samples. Qhv samples have been given two letter prefixes which refer to their location. These pre- fixes are: PC, Pakushin Cone; PK, Point Kadin Vents; LR, Lava Ramp; SL, sugarloaf; CW Cape Wislow; TT Table Top Mountain; and WB; Wide Bay Cone. QTve samples are all prefixed by an M followed by either a number, referring to age of Makushin Volcano analyses, or a letter, referring to location of Pleistocene rem- nants. Ages of Makushin Volcano analyses are assigned on stratigraphic position and de- gree of glacial dissection and are only semiquantitative. The QTve Makuhsin Volcano abbreviations are; M1, late Holocene blocks and bombs, these are the most recent eruptive products; M2, Holocene flows, blocks, bombs and caldera rim remnants; M3, early Holocene samples; M4, late (?) Pleistocene; M5, Pleistocene, these flows have undergone substantial glacial erosion but are still clearly derived from Makushin Volcano, some may only predate Holocene glacial advances. QTvc abbreviations for areally restricted Pleis- tocene samples are: Mc, Eider Point-Cape Cheerful area: Md, immediately east of Drift- wood Valley; Me, immediately west of Driftwood Valley; Mf, Point Kovrishka area; Mg, upper Nateekin Valley and the ridge between Nateekin and Makushin valleys; and Mh, upper Glacier valley. A graphical key to sample numbers forms an inset to Plate 1. .3 Age Ages of samples of Quaternary volcanic rocks from northern Unalaska Island are poorly constrained. The radiometric dates available are in table 1. Dated Pleistocene rocks range from 0.26 + 0.01 to 0.93 + 0.03 m.y. Ages are restricted at individual localities and vary between localities. Given the paucity of data this observation is only suggestive of migration of the eruptive center with time. The oldest samples (0.90 and 0.93 + 0.03 m.y.) are from the ridge east of Driftwood Valley. The one dated Eider Point flow is younger, at 0.69 + 0.06 m.y. Flows west of Driftwood are substantially younger; a stratigraphically high flow is 0.38 + 0.04 m.y., and a dike intruding this package is 0.26 + 0.01 m.y. The youngest dated Pleistocene flows are from the Point Kovrishka area and are 0.30 + 0.02-to 0.34 + 0.04 my. In the absence of abundant radiometric dates, preliminary ages have been assigned to other samples on the basis of the extent of glacial erosion. These ages are admittedly imprecise, but form the basis of the sample numbering scheme outlined in section 3.2. The two great uncertainties in these "glacial" ages are 1) the difficulty of assigning Makushin Volcano samples to "Pleistocene" vs "pre-Neoglacial” ages since the amount of erosion caused by neoglacial advances is unknown and 2) the difficulty of assigning ages to post-Pleistocene deposits since the downvalley limit of the neoglacial advances is not known at Makushin. Consideration of glacial activity indicates that the major satellitic centers (Pakushin Cone, Table Top, Wide Bay Cone and Sugarloaf) as well as the Lava Ramp are all between 11,000 and about 3,000 years old. All occupy Pleistocene glacial valleys and are thus younger than 11,000 yrs (i.e. younger than the retreat of massive Pleistocene ice sheets, see Black, 1981, and references therein). Also, these centers are all older than 3,000 yrs, since they have been glaciated, and this is the age of the last major Holocene glacial advance (Black, 1981). It may be possible, with further work, to refine these ages. If it could be shown that the 3,000 yr advance did not reach low levels at Makuhsin then the major Qhv deposits could be assigned to the 11,000 - 7,000 yr bracket. Alternatively, if it could be shown that the 7,000 yr glacial advance was especially vigorous, then the Qhv centers could, perhaps, be assigned to the 7,000 - 3,000 yr interval. A focused !4c dating program would be useful. 3.4 Chemistry Overview The Quaternary volcanic rocks at Makushin have major and trace element composi- tions typical of convergent margin magmas. They form a broad continuum of mafic to silicic compositions, with abundant rocks of intermediate SiO>, have low TiO, and high ratios of alkali metals to small, highly charged cations (see Gill, 1981; Ewart, 1982; and Pearce, 1982, for review). Analyses and analytical methods are given in appendix 2. Most analyses fall on, or slightly above, the tholeiitic (TH) - calcalkaline (CA) dividing line of Miyashiro (1974) on a plot of FeO*(total iron as FeO)/MgoO vs. SiO, (fig. 2). Analyses span the range basalt to dacite, with most analyses in the andesite range. With increasing SiO, Na,O, K,0, Rb, Ba, Ce, Nd, Nb, Zr and Y increase, MgO, FeO*, Ni, Cr and Sr and, to a lesser extent, Al,O3, decrease and P05 and TiO, remain fairly constant (appendix 4). V contents remain fixed over much of the range of compositions, but decrease dramatically in the high SiO, samples (appendix 4). Al,O3 and Sr contents vary considerably in the low SiO samples, and have a more restricted range at high SiO, (appendix 4). Such vari- ations may be due to plagioclase accumulation. Note that the low SiO, samples tend to have higher total phenocryst contents than the high SiO, samples (fig. 3). 10 Variations in chemistry are qualitatively compatible with a petrogenetic mecha- nism dominated by crystal fractionation of a parental basaltic melt. There are, however, variations in chemistry that preclude an interpretation of simple fractionation of a single, long lived, crustal magma chamber. Such variations require mixing between batches of magma at different degrees of fractionation as well as introduction into the shallow sys- tem of successive batches of magma with differing chemical compositions. Magma mixing within the shallow level system is demonstrated by compatible ele- ment (e.g. Mg, Cr, Ni) vs. incompatible element (e.g. Rb, K, Zr) systematics. Mg, Cr and Ni are preferentially partitioned into mafic silicate minerals during crystalization, hence their concentration drops during fractional crystalization. Incompatible elements are ex- cluded from those mineral species that form phenocrysts in the Makushin magmas, and are concentrated in the residual liquid during fractionation. If the variations in composition of the Makushin suite are produced wholly by crystal fractionation then lava compositions should lie along curved fractionation paths such as the model paths in figure 4. Compositions which lie above the fractionation curves in these figures are produced ei- ther by mixing of less fractionated high Mg, low Rb compositions with evolved low Mg, high Rb compositions, or by crystal accumulation. Crystal accumulation cannot be called on for many of the lavas that lie above the fractionation lines since many of these sam- ples have very low phenocryst contents. Mixing is likely to happen when a new batch of little fractionated magma intrudes into the upper crust and mixes with a shallow, evolved magma chamber. Resupply of the shallow level magmatic system with newly arriving batches of magma from depth is also demonstrated by variations in K/Y ratios (fig. 5). K and Y are both enriched in the melt during crystal fractionation, but at equal rates. Because they have the same bulk distribution coefficients, Doulk (Dp yK=Cs/Cy, where Cy is the con- centration in phenocrysts and Cc is the concentration of an element in the liquid), the K/Y ratio will not change during fractional crystalization. The wide range of K/Y values 11 at Makushin especially from QTvc samples, thus precludes fractionation of a single magma chamber, or fractionation of a single homogeneous parent composition, at Makushin and requires resupply of new aliquots of parent magma of subtly different composition to the shallow level magmatic system. This observation is corroborated by similar behavior of other incompatible element ratios, such as Rb/Y, Zr/Y, Rb/Zr and K/Rb. 3.5 Mineralogy Overview The lavas erupted from Makushin and its flank vents are usually porphyritic, with phenocrysts generally less than a few mm maximum diameter, and contain phenocrysts of plagioclase + augite + olivine + orthopyroxene + titanomagnetite. Diopside occurs in a few of the most mafic samples. Hydrous phases are absent from the lavas, but hornblende has been reported from Holocene tephra (Arce, 1983). With rare exceptions plagioclase is the dominant phase, comprising as much as half the rock, and usually over half the modal mineralogy. Augite is usually next most abundant and comprises less than 10% of the rock. Amounts of opx and ol are usually subordinate to augite. Olivine is generally re- stricted to basalts and opx to andesites and dacites. Magnetite is common as a microphe- nocryst, but rarely comprises more than 1% of the rock. Chrome spinel is included in diopside and forsteritic olivine. Total phenocryst contents correlate roughly with SiO, concentration (fig. 3). In some cases, but definitely not all, the low SiO, concentration of extremely porphyritic rocks may be an artifact of crystal accumulation. That is, there is no clear relationship between total phenocryst content and the amount of displacement of whole rock compositions from model MgO - Rb fractionation paths (see fig. 4 and discus- sion in 3.4, above). Compositions of phenocrysts span a fairly wide range altogether (pl=An 4g-ANgs, 0l=F036-Fo091, aug=En75-Engs, opx=En¢5-En74, appendix 3, figs. 6, 7). Compositions of 12 phenocrysts from individual samples are, as expected, of more restricted compositional range, although in some cases compositions within single samples span half the composi- tional range of all samples together. Plagioclase, olivine and augite are usually normally zoned. Plagioclase crystal often have complex oscillatory zoning, and frequently have concentric spongy zones within the crystal. Rims are usually only a few mole percent anorthite (An) poorer than cores, although extreme cases of zoning over a few tens of percent An exist. Augite and diopside are generally normally zoned by a few percent fer- rosilite (Fs), and occasionally (especially in PC-06 and PC-09 from the basal pyroclastic unit from Pakushin Cone) have complex oscillatory zoning. Olivine is usually normally zoned, frequently in excess of 10 mole percent forsterite (Fo), between core and rim. Or- thopyroxene is frequently reverse zoned by a few mole percent En. In addition to being zoned, mafic silicate phenocrysts can be rimmed by different minerals. Rims of opx and Pigeonite are not uncommon on augite and olivine, and augite rims on opx occur infre- quently. Chemical equilibria between silicate liquids, Pyroxenes and olivine, and between Pyroxenes, are known from experimental petrology. The extent to which minerals in a given sample do or do not conform to the known equilibria can be used to trace the his- tory of crystals in a magma and thus infer petrogenetic processes. The ratio of FeO/MgO between liquids and silicates, and between different silicates, is largely independent of temperature and pressure and is expressed as the iron-magnesium exchange coefficient KpFe/M&(_ i), which equals molar (FeO/MgO);/(Fe0/MgO) > Where i and j are either min- eral species or the host liquid. KoFe/M8(91-1), KpFe/ M8 (cpx-1) and KpF°e/ M8 (opx-cpx) are 0.30, 0.25 and 1.20, respectively (Roeder, 1974; Grove and others, 1982; and Lindsley, 1983). KpFe/ M8 (01-1) and KpFe/ M&(cpx-1) are independent of temperature. KpF®/M8(opx_ cpx) is temperature dependent, but will vary less than 10% over the temperature range of Makushin magmas (Lindsley, 1983). From the three known KpF®/Mg, xpFe/ M8 (opx-1) 13 and KpFe/ M8 (o1-cpx) can be calculated by simple algebra and should be 0.30 and 1.20, re- spectively. Apparent KpFe/ Mg, for all analyzed samples from Makushin and its flank vents are in table 2. In all cases KoF e/ Mg, were calculated using the most magnesian core of each mineral and the whole rock composition. Using the most magnesian cores and whole rocks alleviates the need to correct for in situ fractionation and will reflect true equilib- rium if the liquid, before crystallization, was multiply saturated with all phenocryst phases. A second set of KoF e/ Mg, for LR-02 is included using the compositions of anomalously Mg rich cpx and olivine. In general, the apparent KpFe/ Mg, are not acceptably close (+ 0.02) to equilibrium KpFe/Mg, Apparent values of KpFe/ M&x1-1) which are smaller than equilibrium values indicate that the crystals are too magnesian and that at least part of the population of that species must be xenocrysts. Apparent values of KpoFe/ M8(x1-1) which are greater than equilibrium values indicate that crystals are too iron rich to be in equilibrium with the enclosing magma. Such crystals are also usually xenocrysts, but in the few cases where all KpFe/ M&(x1-1) are equally large, all KpFe/ M8 x1<x1) approach equilibrium and the whole rock compositions are enough above model MgO-Rb fractionation lines, then selective con- centration of phenocrysts in the host magma may have occurred. Md-14 is a case in point. The first order conclusion that can be drawn from consideration of mineral-min- eral and mineral-liquid equilibria is that those samples for which microprobe data exist rarely represent liquid compositions. In situ crystal accumulation is rarely a sufficient explanation for the apparent disequilibria. Instead, and especially in cases where some mineral species are too magnesian, and others too ferroan, complex processes involving crystal accumulation, magma mixing and selective crystal entrainment of pieces of young cumulate bodies are required to explain the disequilibrium. Detailed microprobe studies sufficient to discriminate multiple populations within individual mineral species could possibly provide enough evidence to sort out the relative contributions of such processes. 14 3.6 OTve - Central Vent Lavas Analyzed samples of QTvc span the range of all analyses of northern Unalaska lavas. These compositions are graphically depicted in silica variation diagrams in ap- pendix 4, and run from basalt to dacite. These analyses define continuous, moderately tightly clustered, linear or curvilinear arrays on the variation diagrams. In reconnais- sance interpretations of the Makushin magmatic system such clustered arrays have been used as permissive evidence that the entire Makushin system is comagmatic and related to a single, large, long lived magma chamber (Swanson and others, 1983; Swanson 1983). However, such an analysis breaks down under close scrutiny. This close scrutiny suggests that the plumbing system giving rise to QTve lavas is, on the whole, relatively small and temporally discontinuous. Several lines of evidence specifically require a rather complicated picture of the shallow plumbing system feeding QTve. First, lavas which are spatially and/or temporally restricted span a wide range of composition. Fig- ure 8 shows select elements as a function of SiO, with QTve samples from different loca- tions and ages are plotted as separate symbols. In figure 9 Qhv samples have been plot- ted as separate symbols by area. In figure 8 note the wide degree of overlap between dif- ferent groups and the wide compositional spread within groups. Such inhomogeneity within groups yet constancy between groups is best interpreted as representing eruption from a fairly small, frequently resupplied magma chamber. Such a chamber would frac- tionate rather rapidly because of its small size (thus high rate of heat loss) and could erupt anything from basalt to dacite within a fairly short time period. Such a chamber must also be resupplied at frequent intervals, thus permitting such features as the factor of two variation in KO at a given SiO, concentration of the Pleistocene Makushin Vol- cano analyses, widespread mineralogical disequilibrium (table 2), and scatter above the Mg-Rb fractionation path (fig. 4). 15 Frequent resupply of a small chamber is also indicated by the wide range in K/Y ratios shown in figure 5. K/Y ratios will not vary as a function of the extent of frac- tional crystalization, and thus can only vary if the K/Y ratios of the parental magma changes. Most Makushin units have K/Y ratios which vary beyond the range of analyti- cal imprecision. This requires either eruption of successive, different, magma batches or mixing of incoming magma with a preexisting, shallow magma chamber (consideration of mineral equilibria suggest that the latter may be a more common mechanism). Consideration of Mg-Rb systematics also requires complicated plumbing feeding Makushin Volcano. Samples which lie above model fractionation lines in figure 4 are a product of mafic phenocryst accumulation, magma mixing, or both. Note that in figure 4 those samples which plot above the model fractionation lines are usually Pleistocene QTve. Consideration of mineral-melt equilibria (section 3.5, table 2) suggests that only some of these compositions can arise by in situ accumulation of phenocrysts. Magma mix- ing or selected xenocryst entrainment is required when KpFe/ M&(x1-x1) are not equilib- rium values or when KpFe/ M&(x1-1) are not equally smaller than equilibrium values. Holocene lava and tephra (M1 and M2 samples) are generally more siliceous than older QTvc. 62% of all M1 and M2 analyses are >58% SiO). 70% of all analyzed samples over 58% SiO>, and virtually all dacites, are M1 and M2 series. This suggests that there is currently an evolved, shallow chamber which, since it is more evolved than normal for the volcano, may have been in place for a comparatively long time. Evidence from whole rock and mineral chemistry requires that this chamber has been periodically reinjected, as noted for other QTvc, above. 3.7 OQhy - Homogeneous Volcanics Qhv samples are erupted products of short-lived relatively high volume eruptions. Such eruptions typically form monogenetic flank vents and volcanoes, but in one case such an 16 eruption came from the central Makushin Volcano. Geomorphic evidence requires that all major Qhv deposits were emplaced between 11,000 and 3,000 years before present (see Sec- tion 3.3). There are 3 major Qhv centers (Pakushin cone, the Lava Ramp and Table Top Mtn) and 4 smaller centers (Sugarloaf Cone, Wide Bay Cone, the Point Kadin vents and the de- posit at Cape Wislow). These will be described individually below. _ In contrast to QTve, Qhv centers are either chemically homogeneous or have distinct, recognizable features. Figure 9 shows that analyses from individual Qhv centers are restricted to rela- tively small portions of the total compositional spread, especially with respect to tempo- rally or spatially related QTvc (fig.8). This chemical homogeneity extends to elemental ratios which will not change during fractional crystalization. For instance, K/Y ratios from Qhv centers are tightly grouped, especially compared to temporally or spatially re- lated QTve (fig. 5). This chemical homogeneity suggests that samples from individual Qhvy centers are comagmatic. Differences in composition between centers, especially dif- ferences in K/Y, require that individual Qhvy centers are not produced from a common magma chamber. Pakushin Cone is the southernmost Qhv vent, and is about 7 km SSW of Makushin’s summit. The basal and distal parts of the cone are pyroclastic material, at least the basal part of which contains large bombs of basalt containing olivine and aluminous diopside xenocrysts. The bulk of the cone is made up of basalt and basaltic andesite (50-55% Si0>) spatter and flows. The flows on the lower part of the edifice have been glaciated but the nested cinder cones and vents within the summit crater have not been modified by ice movement. Compared to other lavas at Makushin, the Pakushin lavas have high Al,03 (and thus low CaO/A1503), FeO* and MgO contents that decrease rapidly with increasing SiO5, high Na O, KO and Sr, normal Rb and low Y and Zr. Pakushin lavas have high K/Y ratios. Pakushin lavas, save the basal pyroclastic units, have hand specimen appearances 17 unique at Makushin and rare in general. This unique appearance is produced by radiat- ing bundles of plagioclase laths such that plagioclase crystals in hand specimen are of equal size and coin-shaped morphology. Such textures have been reported from plagio- clase crystalization experiments at moderately high degrees of undercooling (Lofgren, 1974). On incompatible-compatible element variation diagrams the Pakushin lavas define a mixing trend between evolved basaltic andesite lying on the fractionation trend and a very high Mg composition (fig. 10). Mineral compositions and consideration of mineral- melt equilibria suggest that the high Mg material is xenocrystic diopside and olivine. The Lava Ramp is the most voluminous set of Qhv flows. These flows issued from the summit or high east flank of Makushin and flowed down Makushin Valley, then down Driftwood Valley to within 1 km of the present coast. These flows have no soil or ero- sional debris between them, suggesting that this package of flows was emplaced in a geo- logically short time period. These flows are more siliceous than the Pakushin flows and range from 54-59% Si05, and have compositions typical of other Makushin magmas. In two places (the D-1 drill core and at Makushin Canyon) vertical sections of 180 and 200 m, respectively, were sampled and analyzed. Both sections are broadly isochemical (e.g. fig. 11), although the upper 40 m of the D-1 core is progressively less fractionated toward the surface. The Lava Ramp appears vertically isochemical but it is horizontally zoned. The distal portions of the package tend to be less fractionated. They have lower Si05, K,0 and FeO*/MgO (fig. 12) and higher CaO0/A1,03, suggesting eruption of a large, zoned magma chamber. However, the zonation in the magma chamber was not neccessar- ily produced by in situ fractionation of a closed system. On incompatible-compatible el- ement variation diagrams (see fig. 10 for an example) the Lava Ramp samples fall on a tight linear trend subparallel to, and above the model fractionation line. This requires fractionation in a chamber with lower Doug or higher Ciz,, either of which is incompati- ble with fractionation within the same chamber which produced the Pakushin lavas. 18 A model fractionation path with Dug of 1.8 is given in figure 4. The Lava Ramp samples fall near this model fractionation path, but form a straight chord to the path, suggesting that magma mixing between two compositions which both fall on the fractiona- tion trend has occurred. A mixing hypothesis for Lava Ramp samples is corroborated by widespread mineral disequilibrium, both with other crystals and with the host melt. Ata first approximation olivine is near, or slightly more magnesian than equilibrium with the liquid, and is usually normally zoned. Orthopyroxene, and, to a lesser extent, augite, is too iron rich for equilibrium with the host liquid and is reversely zoned. Mixing between two discreet magma batches is indicated, and our preferred sce- nario follows. We suspect that a relatively small chamber of residual two pyroxene an- desite existed under the summit of Makushin. During the same time of construction as other Qhv centers a large volume of olivine-plagioclase phyric basaltic-andesite rose from depth and entered the preexisting static magma chamber, causing, by virtue of its higher temperature, ane overturn, vesiculation, and mixing of the entire system. A com- bination of volume problems and gas pressure then caused eruption, with lava dominated by newly arriving, more mafic, magma erupting first. Sugarloaf, at the head of Driftwood Valley, has the composition appropriate for the mafic end member of the mixture which forms the Lava Ramp. Table Top and Wide Bay Cone together form the other voluminous Qhv centers. These features are formed of basalts of uniform composition which hold down the most mafic end of the Makushin compositional array. These basalts are distinct in hand speci- men and carry large xenocrysts of olivine and clinopyroxene with subordinate, much smaller plagioclase phenocrysts. 4.0 Relation of the Shallow Magma System to Geothermal Resources 19 Magmas of northern Unalaska Island are, in the broadest sense, related by frac- tional crystalization. This does not, however, imply fractionation of a single magma chamber with a lifetime long with respect to the age of the volcanic system. Widespread mineral/mineral and mineral/liquid disequilibrium, variations in incompati- ble/incompatible element ratios of spatially and temporally related QTvc samples, and wide compositional ranges of QTvc samples all provide abundant evidence that the plumb- ing system feeding QTvc is not simple. . Magma mixing, xenocryst entrainment, resupply of the magmatic system by parent magmas of different compositions and, perhaps, crustal assimilation, must all occur in ad- dition to simple crystal fractionation. It is important to a full understanding of the geothermal system to quantify the extent to which the different processes operate. By virtue of the large data base at Makushin we are in an unusually good position to do this, although answers can only be semiquantitative. In order to produce the wide range in ratios of two incompatible elements, and in order to produce the widespread chemical disequilibria, newly arriving batches of magma must be large with respect to the size of the static magma chamber, or else their effect would be masked by the shallow chamber. If the static chamber is to be of roughly constant size then the volume of incoming material must be equivalent to the volume of erupted material in any magmatic episode. While we have little knowledge of the average volume of juvenile material ejected in a single eruption at Makushin, eruptions of other arc volcanoes are routinely 107! to 1072 km3, and eruptions of 1 to 10 km3 are extremely rare (Simkin and others, 1981). If eruptions at Makushin are 107! to 1072 km3, the incomining batch of magma is large with respect to the shallow chamber, and the chamber remains roughly at constant volume then the shallow chamber must be on the order of 107! to 1 km3 . These figures are only time integrated averages. If there are large repose times between eruptions then such a chamber might well completely solidify between eruptions, and during periods of increased volcanic activity the chamber might be larger. In any case, a shallow chamber volume of hundreds, or even tens, of km? seems very unlikely. If repose times between eruptions are on the order of 102 years (Arce, 1983, sum- marizes the historic record), and volumes are as described above, then magma supply rates to the upper crust must be on the order of 1072 or 1073 km?3/yr. Given reasonable esti- mates of temperature drops during crustal residence (f; ig. 7) heat supply rates to the shal- low crust of 1013 to 10!4 cal/yr are indicated. These heat supply rates are insufficient to explain even the surface heat flux of small geothermal systems (e.g. Ellis and Mahon, 1977, p. 340). Eruption of unusually large volumes of material over fairly short time periods oc- curred during the early Holocene and produced the Qhv centers. Magma flux during the early Holocene was several tens of times greater than average for Makushin Volcano. One of these batches of magma erupted though Makushin Volcano to produce the Lava Ramp. The uncharacteristically silicic nature of Holocene Makushin Volcano magma (M1, M2 samples) suggests that a relatively large batch of magma was left behind by the Lava Ramp eruption, and that that batch has been fractionating with time. Mineral data re- quire that the modern magma chamber has also been reinjected by new magma, but the silicic nature of the Holocene magmas suggests that the modern chamber is big enough to overwhelm the newly injected material. This is notably uncharacteristic of Makushin Volcano’s typical behavior. We propose that this unusually large Holocene chamber is the ultimate heat source for the Makushin geothermal system. Volcanic centers with similarly anomalously high volume, Holocene, eruptions may also host significant geothermal systems, and search for such voluminous Holocene systems may be a viable exploration tool in areas where there is little background knowledge. 20 21 5.0 References Arce, G.N., 1983, Volcanic hazards from Makushin Volcano, northern Unalaska Island, Alaska: Fairbanks, University of Alaska unpublished M.S. thesis, 142 p. Black, R.F., 1981, Late Quaternary climatic changes in the Aleutian Islands, Alaska, in Mahaney, W.C. ed., Quaternary Paleoclimate: Norwich, U.K., Geoabstracts Ltd., p. 47-62. Drewes, H., Fraser, G.D., Snyder, G.L; and Barnett, H.F. Jr., 1961, Geology of Unalaska Island and adjacent insular shelf, Aleutian Islands, Alaska: U.S. Geological Survey Bulletin 1028-S, p.583-676. Ellis, A.J., and Mahon, W.A.J., 1977, Chemistry and Geothermal Systems: New York, Aca- demic Press, 392 pp. Ewart, A., 1982, The mineralogy and petrology of Tertiary-Recent orogenic volcanic rocks: with special reference to the andesite-basaltic compositional range, in Thorpe, R.S., ed., Andesites: orogenic andesites and related rocks: New York, John Wiley and Sons, p. 25-99. Gill, J.B., 1981, Orogenic Andesites and Plate Tectonics: New York, Springer-Verlag, 390 p. 22 Grove, T.L., Gerlach, D.C., and Sando, T.W., 1982, Origin of calc-alkaline series lavas at Medicine Lake Volcano by fractionation, assimilation and mixing: Contrib. Mineral. Petrol., v. 80, p. 160-182. Lankford, S.M., and Hill, J.M., 1979, Stratigraphy and depositional environment of the Dutch Harbor Memeber of the Unalaska Formation, Unalaska Island, Alaska: U.S. Geological Survey Bulletin 1457-B, p.B1-B14. Lindsley, D.H., 1983, Pyroxene thermometry: Am. Min., v. 68, p. 477-493. Lofgren, G., 1974, An experimental study of plagioclase crystal morphology: isothermal crystallization: Am. J. Sci., v. 274, p. 243-273. Miyashiro, A., 1974, Volcanic rock series in island arcs and active continental margins: Am. J. Sci., v. 274, p. 321-355. Nye, C.J., Queen, L.D., and Motyka, R.J., 1984, Geologic map of the Makushin geothermal area, Unalaska Island, Alaska: Alaska Div. Geol. Geophys. Surveys Report of Investigations RI 84-2, 2 sheets, 1:24,000. Parmentier, P.P., Reeder, J.W., and Henning, M.W., Geology and hydrothermal alteration of Maksuhin Geothermal Area, Unalaska Island, Alaska: Geotherm. Res. Coun- cil Transactions, v. 7., p. 181-185. Pearce, J.A., Trace element characteristics of lavas from destructive plate boundaries, in Thorpe, R.S., ed., Andesites: orogenic andesites and related rocks: New York, John Wiley and Sons, p. 25-99. 23 Roeder, P.L., 1974, Activity of iron and olivine solubility in basaltic liquids: Earth Plan. Sci. Lett., v. 23, p. 397-410. Swanson, S.E., 1983, Mineralogy and fractionation in the Makushin volcanic field, Un- alaska Island, Alaska: Geol. Soc. Am. Abs. w/ Programs, v. 15, p. 703. Swanson, S.E., Nye, C., and Motyka, R.J., 1983, Petrology of the Makushin volcanic field, Unalaska Island, Alaska: Eos, v. 64, p. 335. Simkin, T., Siebert, L., McClelland, L., Bridge, D., Newhall, C., and Latter, J.H., 1981, Vol- canoes of the World: Stroudsburg, Penn., Hutchinson Ross Pub. Co., 232 p. 24 Table 1. K/Ar age determinations. sample # map # K20 sample 40ayr a 4° ar ad rien age + 158 (lab #) (wt %) wt (g) (mo178) RS 40areee (m.y.) x1o-42 x1073 M10 Md-10 1.492 13.5314 0.196 0.0530 0.281 0.91+0.03 (83055) 1.497 1.495 0.191 0.0516 0.274 0.89+0.90 0.90+0.03 M14 Md-14 1.760 10.2882 0.238 0.0543 0.106 0.93+0.03 (83059) 1.780 1.770 M30 Mc-18 0.680 9.6739 0.0671 0.0401 0.0190 0.69+0.06 (83057) 0.670 0.675 M34 Me-01 1.040 11.0586 0.0564 0.0218 0.0299 0.38+0.04* (83060) 1.050 1.045 M39 Me-06 1.638 13.8055 0.0599 0.0150 0.0992 0.26+0.01* (84052) 1.592 1.615 M44c M3-13c 1.187 10.7545 -0.0111-0.00377 -0.0084 zero (83061) 1.197 (unmeasurable) 1.192 M47 Mf-03 1.330 12.2446 0.565 0.0171 0.0201 0.30+0.02 (83062) 1.330 13330 M49 Mf-05 1.250 7.7701 0.0616 0.0199 0.0357 0.34+0.04* (83063) -250 1.250 rad=radiogenic; lambdag+lambda¢' =0.581x10 1%yr~1; x/% =1.167x10~4 mol/mol; “=minimum age; all samples analysed in the DGG S5RP GI cooperative K/Ar laboratory, J. Blum, analyst. 25 Table 2. Fe0/MgO exchange coefficients (xDFe/Mg) for all Makushin samples. Values indicative of equilibrium are underlined. All KDs are calculated using the whole rock Fe0/MgoO and the FeO/MgO ratios of the most magnesian phenocrysts. Whole rock FeO is derived from FeO* with an assumed Fe°*/Fe ratio of 0.175. ma ol/l cpx/1 opx/1 ol/cpx opx/cpx LR-02 | 0.431 0.360 0.400 1.195 1.110 | 0.291 0.175 1.660 LR-06a 0.235 0.330 0.428 0.713 1.297 LR-O06f 0.292 0.453 0.417 0.646 0.922 LR-11 | 0.391 0.240 0.421 1.624 1.751 LR-12b 0.283 0.372 0.416 0.716 1.116 LR-12n 0.313 0.288 0.289 1.090 1.005 M1-01 0.198 0.183 0.296 1.081 1.621 M1-5lc 0.205 0.250 1.222 M1-51d 0.214 0.160 0.319 1.337 1.993 Mc-18 0.438 0.213 2.060 Md-04 0.582 0.431 0.508 1.349 1.177 Mad=14 0.529 0.581 . 1.099 Me-03 0.365 0.165 2.215 Me-06 0.646 0.861 1.332 Me-07 | 0.200 0.058 3.439 Mf-01 0.260 0.191 1.363 Mf-04 | 0.402 0.394 1.019 PC-02 0.417 0.293 1.425 PC-06 0.245 0.262 0.938 Pc-09 0.251 0.341 0.737 PC=-11 | 0.261 0.357 1.370 PK-02 | 0.242 TT-10 | 0.377 0.332 -136 TT-22 | 1.175 WB-05 | 2.469 26 Figure Captions Figure 1. Map of northern Unalaska Island showing locations of volcanic vents, general- ized geology of Quaternary units and geography. Figure 2. FeO*(total iron as FeO)/MgO diagram. The tholeiitic (Th) - calcalkaline (Ca) di- viding line is from Miyashiro (1974). Symbols are as follows: stars, late Holocene Makushin Volcano (MI series); crosses, middle and early Holocene Makushin Volcano (M2, M3 and M4 series); small pluses, Pleistocene QTvc (M5, Mc, Md, Me, Mf, Mg and Mh se- ries); triangles, Lava Ramp (LR); inverted triangles Sugarloaf (SL); hexagons, Pakushin Cone (PC); squares, Point Kadin Vents (PK); upright diamonds, Table Top Mountain (TT); and sideways diamonds, Wide Bay Cone (WB). Figure 3. Volume percent phenocrysts versus SiO). Figure 4. MgO versus Rb for all Makuhsin analyses. Symbols as in Figure 2, with the ad- dition of large plusses, which are calculated fractional crystallization paths at increments of 10% fractionation. The model assumes Dpp=0.03, Cipp=7 ppm, Dugon!8 (upper line) or 2.2 (lower line), and Ciyjgo=!0.0 wt %. The values for Dugo span acceptible values when D’s are estimated on loSetement vs. logry diagrams. Slopes on log-log diagrams are an accurate measure the empiracal bulk distribution coefficients (Ds) for a system. The inset shows the effect of crystal accumulation and magma mixing, in addition to frac- tional crystallization, on Mg-Rb systematics. Tic marks on all lines are 10% increments. 27 Figure 5. K/Y ratios for different spatially and/or temporally related samples. Since K and Y have the same empirical Ds (measured from the slopes on loSetement7!OSRpH dia- grams), the K/Y ratio cannot vary outside the analytical precision (<10%) among comag- matic samples. Note the wide range in K/Y among most M groups compared to LR, PC and TT samples. Figure 6. Compositions of all Makushin analyses of augite, diopside, pigeonite, orthopy- roxene and olivine. Cpx thermal stabilities and 3 phase pyroxene triangles are from Lind- sley (1983), and provide temperature estimates for those samples with coexisting pyrox- enes. Figure 7. Compositions of all Makushin analyses of plagioclase. Figure 8. SiO vs. Al,03 (fig. 8a), FeOt (total iron as FeO, fig. 8b), K,0 (fig. 8c) and Zr (fig. 8d) for QT vc samples only. Symbols are: stars, Holcene Makushin Volcano (M1, M2, M3); squares, Pleistocene Makushin Volcano (M4, M5); triangles, Eider Point-Cape Cheer- ful area (Mc); inverted triangles, west of Drif: twood Valley (Md); hexagons, east of Drift- wood Valley (Me); upright diamonds, Cans Kovrishka area (Mf); sideways diamonds, up- per Nateekin and Makushin valleys (Mg, Mh). Figure 9. Si0>5 vs. Al,03 (fig. 9a), FeOt (total iron as FeO, fig. 9b), K,0 (fig. 9c) and Zr (fig. 9d) for Qhv samples only. Symbols are: triangles, Lava Ramp (LR); inverted triangles, Sugarloaf (SL); hexagons, Pakushin Cone (PC); squares, Point Kadin Vents (PK); di- amonds, Table Top Mtn. (TT); and sideways diamonds, Wide Bay Cone (WB). Figure 10. MgO vs. Zr for Lava Ramp and Pakushin Cone samples, and for a model frac- tional crystallization path. Values for D’s and Ciz, are taken from regressions of all 28 Makushin data and represent empiracal best estimates for these values at Makushin. The Pakushin data fall on a mixing trend between fractionated magma and ferromagnesian phenocrysts. The Lava Ramp data require magma mixing and/or fractionation at lower Dug or higher Ciz, than at Pakushin (either of which preclude comagmatism between Pakushin and the Lava Ramp). Figure 11. FeOt(total iron as FeO)/MgO vs. depth below the surface for the two vertical sections through the lava ramp. The Makushin Canyon section also has higher Ca0/A1,03 and lower SiO, and incompatible trace elements. Figure 12. FeOt/MgO vs km from an arbitrary location on the SE flank of Makushin Volcano for all Lava Ramp analyses. Table Top Mtn Lava Ramp Cape Wislow, Cape Cheerful Sugarloaf ——_ = + + + + + + + + + + + + + + + + + + + + + + + + + + + ahh, + + +47" «MAKUSHIN’ +" + + + + + Co ++" + VOLCANO eS we DUTCH HARBOR h + + + + + + + UNALASKA Pakushi , Va akushin Cone @ Qal - alluvium ey aw | Qvp - pyroclastic debris Qhv - homogeneous volcanics QTvc - polygenetic vent lavas 4 S . 5 0 5 km cOtS 0°0S 0o°SS 0°09 0°S9 FeOx/MgO 1.00 2.00 3.00 4.00 5.00 volume % phenocrysts 80 ——— 70 4 60 4 + i: + 50 4 + + + + + + + 40 - 2 + + HH + + Foy tte t + + 304 + + + 4% + + + 20 4 + 10 4 + o-+—_—_ 48 50 52 54 56 58 ++ 60 62 64 = a 10.0 20.0 30.0 40.0 50.0 60.0 70.0 0 0.2 0.4 0.6 0.8 { (Thousands) Ky mole fraction Wo 0.3) cores 900 C 1000 C 1100 C mole fraction Fs and Fa x rims and gms mole percent orthoclase 0.12 0.11 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0.00 all Makushin plagioclase analyses + + os they 5 = 0 a 4 + +H ay + + see PP a ta ay % +47 ea : + te + + + * Hy a HF 4, T ——— n T r 0.1 0.3 0.5 0.7 0.9 mole percent anorthite Al203 20.0 .0 18.0 16 14.0 QTive ony E ] | A ¥ oa A ¥ MA ee) ; Ae 5 6 0 oy OQ A A A ¥V OSs % A“ o O49 yy a ie oO > 7 Be Be eee ae” ff ¥ Ea x x OX HH > wey eS ¥ x A me | peo 50.0 5570 60.0 65.0 5102 Qilvc only ST VW 1a) 7 T i , | ok — = ! 7K xk | | | oO | | * 4 ALL 7 — * 7 Ke xek OK | 9 x 1 * oO | * oO Oo j > <J | : ri te i o oO | ge x > * > 1 B i o | ia > — > | mA tase z | | ase t | Hier et Tit =| “OF 00°8 00°9 50.0 65.0 60 55.0 5102 K20 4.50 2.50 2.00 .00 4 .50 Qilvc only I x x ¥ ¥ Hee % ° * oO v >* ) ‘ - wg By ov hd ¥ ae % 0 rs Dy Oo > 0 OF 8 AK 2 *¥ am go | Li | a: 50.0 55.0 60. 65. QIvc only I 00¢e OS? UZ 60.0 65.0 55.0 50.0 5102 Al203 cOtS 0'ss 00S 0°09 0°S9 14.0 16.0 18.0 20.0 22.0 | T ] T T i) 0 = < oxec oo es © %? Po J oP 6 Oo 7h ° —< oC aso Tome. Qhv only I 00 Z 00° <0 65 .0 60 55.0 .0 50 9 si0e 2.00 K20 4.50 4.00 .50 0.0 Qhv only ] “| I eg a® A oO A do Fx A A oO oO ® 0 ser, oO ek jit 4 sf | 50.0 550 60. 65.0 3.92 zr 150 100 .0 50 Oo A Ra fi i A A . A | of © oO go ° Oo F Ii digs ail 1 L 50.0 55.0 60.0 65.0 MgO (wt %) 1 1 ia aiaciatansipadi cmp site i “ eet eaerer emanate . “| 10 ° | 8 0.8 74 6 4 | O64 4 5 + 7 °° Gyan 0.4 oO o 34 Ng "8 che, 24 0.24 1 ee | ree O ae T ptt tT T r Emaar Seuaeicaae mca | O 40 - 80 120 160 200 240 Zr (ppm) Qo Lava Ramp + model frac. © Pakushin FeOt/MgO 3.30 35.20 3.10 3.00 2.90 2.80 2.70 2.60 2.50 2.40 2.30 2.20 2.10 20 40 o 60 me Mak can 80 yon Lava Ramp 100 120 + 140 ters below flow surface hole D1 160 FeOt/MgO Lava Ramp 8 10 km from “source” 12 14 16 Appendix 1 - Sample Descriptions Samples are listed alphabetically by map number (see section 3.2). Ages are estimates based on relative glacial stratig- raphy. Mineralogy is either based on point counts by Swanson (n=400-500) or visual estimates by Nye (++=dominant consti- tuant; +=major; -=minor; tr=trace). Field numbers consisting of single integers are from Drewes and others (1961) Makushin sample descriptions field no. 83mq63 83mq85 83mn03 u620b 94482un 83mn65 27r81m u35r82 u6271 83mn52 83mn53 83mn54 83mn56 83mn57 83mn40 12 u186r1 m9 1-360 d1-409 1-465 1-520 1-584 d1-635 1-721 1-745 d1-792 1-820 1-867 1-874 d1-931 83mq102 u203r5 u203r7 83mn41 u190r1 u52r82 83mn63 83mn66 m44b m43b m43c m43t map unit Qhv Qhv Qhv Qhv Qhv Qhv QTve QTvc QTve QTve QTvc QTve QTvc QTvc QTvc location W of Glacier Cape Wislow Cape Wislow Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp | Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Lava Ramp Mak canyon Mak Val, near £1 Mak Val, near E1 Makushin flank, E Makushin flank, NE Makushin flank, W caldera rim caldera rim caldera rim Tertiary Holocene (?) Holocene early early early early early early early early early early early early early early early early early early early early early early early early early early early early early early Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Holocene Hologene Holocene Holocene Holocene Holocene Holocene Holocene late Holocene late Holocene late Holocene late Holocene late Holocene late Holocene late Holocene late Holocene late Holocene lava flow (7) lower Drift. Driftwood Val Mak Canyon Mak Canyon Mak Canyon Mak Canyon Mak Canyon Mak Canyon upper end TG hole D1 TG hole D1 TG hole 01 TG hole 01 TG hole D1 TG hole D1 TG hole D1 TG hole D1 TG hole D1 TG hole D1 TG hole 01 TG hole 01 TG hole 01 upper end upper end ashflow block ashflow block ashflow block bomb cinders loose block young bomb young bomb young bomb spl descr. 1 ++ ++ ++ ++ 27 33 ++ ++ 12 14 11 mineralogy l tr tr tr tr tr +e te tet Sean as os is eS 40 40 35 35 40 35 40 34 45 40 35 10 10 15 15 16 13 tuff ? 12-Apr-85 Makushin sample descriptions map field map mineralogy no. no. unit location age comments la ol cpx opx mt % ph comments M2-08 83mn67 QTve Makushin flank, NE Holocene lava flow M2-09 u29r82 QTvc Makushin flank, N Holocene above FF #7 M2-10 u45r82 QTvc Makushin flank, N Holocene above FF #7 M2-11 u49r82 QTvc Makushin flank, N Holocene ? dike ? M2-12 21 QTvc Makushin flank, NW Holocene lava flow M2-15 10 QTvc Makushin flank, S Holocene M2-16 83mn83 QTvc Makushin flank, S Holocene lava flow + + 7 : 35 M2-17 u57s1 QTvc Makushin flank, S Holocene flow M2-25 u66r82 QTvc Makushin flank, S Holocene flow, high alt. M2-26 u67r82 QTvc Makushin flank, S Holocene flow, high alt. M2-32a u208r1 QTve Makushin flank, E Holocene M2-35 16 QTvc Makushin flank, S$ Holocene M2-51a m3a QTvc caldera rim late Holocene young bomb 10 2 1 13 M2-52a u28r82a_ = QTve_—s caldera rim Holocene caldera rim M2-52b u28r82b = QTvc_=«caldera rim Holocene caldera rim M2-52c u28r82c §8=—Tve_-scaldera rim Holocene caldera rim M2-52d u28r82d_ QTve caldera rim Holocene caldera rim M2-53 u646 QTvc caldera rim Holocene caldera rim M2-54 u645 QTvc caldera rim Holocene M2-55 642 QTvc caldera rim Holocene caldera rim M3- 13a m4a QTvc Makuhsin flank, W early Holocene M3-13c m44c QTvc Makuhsin flank, W early Holocene 21 2 4 1 1 29 M3-24 u64r82 QTvc Makushin flank, SE early Holocene ? M4-27a u194r4 QTvc upper Glacier late(?) Pleistocene M4-27b u194r5 QTve upper Glacier late(?) Pleistocene M4-29 u34sl QTvc upper Glacier late(?) Pleistocene M4-30 u36sl QTvc upper Glacier late(?) Pleistocene M4-31 u54s1 QTvc upper Glacier late(?) Pleistocene M4-32 , u208r2 QTvc Makushin flank, E late(?) Pleistocene [ M4-33 u48s1 QTve Makushin flank, E late(?) Pleistocene M4-34 u207r1 QTvc Makushin flank, E late(?) Pleistocene M4-36 u647 QTvc Makushin flank, SE late(?) Pleistocene M5-04 m8 QTvc Makushin flank, E Pleistocene : M5-05 634 QTvc Makushin flank, NE Pleistocene M5-14 u59s1 QTvc Makushin flank, SW Pleistocene M5-18 83mn11 QTvc Makushin flank, S Pleistocene ++ + + - 45 M5-19 83mn10 QTvc Makushin flank, $ Pleistocene M5-20 83mn09 QTvc Makushin flank, S Pleistocene + + : : 45 M5-21 83mq24 QTvc Makushin flank, $ Pleistocene M5-22 83mq25 QTvc Makushin flank, S$ Pleistocene M5-23 83mq27 QTvc Makushin flank, S Pleistocene Mc-01 u201r1 QTvc Eider Point Pleistocene Mc-02 ul63r1 QTvc Eid Pt - C Ch Pleistocene WB Cone ????? Mc -03 ul47r1 QTIvc Eid Pt - C Ch Pleistocene spl descr. 2 12-Apr-85 Makushin sample descriptions map field map mineralogy no. no. unit location age comments plag ol cpx opx mt % ph comments RARIRESSLesesessssssasEes: Mc-04 u152r1 Qive Eid Pt - C Ch Pleistocene Mc-05 83mn80 QTve Eid Pt - C Ch Pleistocene Mc-06 83mn79 QiIve Eid Pt - C Ch Pleistocene ++ + 35 Mc-07 83mn78 QIvc Eid Pt - C Ch Pleistocene Mc-08 u160r1 QTvc Eid Pt - C Ch Pleistocene Mc-09 m2 QTvc Eid Pt - C Ch Pleistocene 21 6 6 33 Mc-11 ul67r1 QTve Eid Pt - C Ch Pleistocene Mc-11a u158r2 QTvc Eid Pt - C.Ch Pleistocene Mc-11b u158r3 QTvc Eid Pt - C Ch Pleistocene Mc- 13 5 QTIvc Eid Pt - C Ch Pleistocene Mc-18 m30 QTve Eid Pt - C Ch Pleistocene 28 8 9 45 Md-04 m4 QTve E of Driftwood Pleistocene 30 1 4 4 1 40 Md-06 m QTvc_ E of Driftwood Pleistocene 47 3 3 1 54 Md-10 mio Qive E of Driftwood Pleistocene 20 tr 7 3 tr 30 Md- 14 m4 Qivc E of Driftwood Pleistocene 20 2 7 4 tr 33 Md-16 m6 QTvc E of Driftwood Pleistocene 18 5 7 2 33 Md-20 8 QTvc E of Driftwood Pleistocene Me-01 m34 QTIvc W of Driftwood Pleistocene 31 3 34 Me-02 m35 QTvc W of Driftwood Pleistocene 33 1 4 38 Me-03 m36 QTvc W of Driftwood Pleistocene 30 2 3 tr tr 35 Me-04 m37 QIve W of Driftwood Pleistocene 29 4 3 36 Me-05 m38 QTvc W of Driftwood Pleistocene - 45 5 1 1 52 Me-06 m9 QTvc W of Driftwood Pleistocene 3 tr ; 3 Me-07 m40 QTvc W of Driftwood Pleistocene 20 5 7 tr 32 Me-09 m42 QTvc W of Driftwood Pleistocene 34 6 3 43 Mf-01 m5 QTvc Point Kovrishka Pleistocene 14 3 8 5 1 31 Mf-02 m46 QTve Point Kovrishka Pleistocene 21 1 5 2 29 Mf-03 m47 QTvc Point Kovrishka Pleistocene 26 1 tr tr 27 Mf-04, m48 QTve Point Kovrishka Pleistocene 47 8 1 tr 56 i Mf-05 m9 QTve Point Kovrishka Pleistocene 46 tr 10 56 Mf-16 mk3a QTvc Point Kovrishka Pleistocene Mf-17 mk15 QTvc Point Kovrishka Pleistocene Mf-20 1 QTvc $ of Pakushin Pleistocene Mg-01 6 QTvc S§ of Mak Valley Pleistocene Mg-03 18 QTve S$ of Mak Valley Pleistocene Mg-04 83mn49 Tu S of Driftwood early Pleist. ? sill Mg-05 83mn36 QTvc upper Nateekin Pleistocene + tr + - : 35 ol resorbed Mg-06 83mn39 QTvc upper Nateekin Pleistocene + : + - : 35 Mg-07 83mn34 Tu upper Nateekin Pleistocene (7?) dike Mg-08 83mn33 QTvc upper Nateekin Pleistocene + + + - 30 Mh-05 83mn23 Tu E of Glacier ~ Pleistocene + + + 25 PC-01 83mn01 Qhv Pakushin Cone early Holocene Pc-02 m21 Qhv = Pakushin Cone early Holocene 39 5 6 50 PC-03 83mn82 Qhv = Pakushin Cone early Holocene + + : - 75 spl descr. 3 12-Apr-85 Makushin sample descriptions map field mineralogy no. locatior plag ol cpx opx mt % ph PC-04 83mn84 Qhv = Pakushin Cone early Holocene ++ : : : 35 PC-05 83mn85 Qhv = Pakushin Cone early Holocene ++ - + + : 40 PC-06 83mn86 Qhv Pakushin Cone early Holocene basal pyro. + + : 20 PC-07 7 Qhv = Pakushin Cone early Holocene PC-08 83mn29 Qhv = Pakushin Cone early Holocene ++ tr + . - 35 PC-09 83mn25 Qhv Pakushin Cone early Holocene basal pyro. + + 30 PC-10 83mn24 Qhv = Pakushin Cone early Holocene + - + : 40 cpx pl mt clots PC-11 m20 Qhv Pakushin Cone early Holocene 40 5 3 3 50 PC-12 83mn28 Qhv = Pakushin Cone early Holocene summit cone ++ + - - 50 PC-13 83mn27 Qhv = Pakushin Cone early Holocene summit cone PC-14 83mn26 Qhv = Pakushin Cone early Holocene summit cone + : + : + 50 cpx in clots PC-15 u58s1 Qhv = Pakushin Cone early Holocene summit PC-20 u70r82 Qhv = Pakushin Cone early Holocene PC-50 u5154h Qhv Pakushin Cone early Holocene PK-01 u638b Qhv Pt Kadin Vents Holocene PK-02 m52 Qhv Pt Kadin Vents early Holocene 2 tr 2 PK-03 u638a Qhv Pt Kadin vents late Holocene PK-04 u638c Qhv Pt Kadin vents late Holocene PK-05 g4782un Qhv Pt Kadin vents late Holocene SL-01 6281 Qhv Sugarloaf early Holocene SL-02 u55r82 Qhv = Sugar loaf early Holocene TT-01 ul64r3, Qhv Table Top early Holocene TT-02 83mn73 Qhv Table Top early Holocene bomb, crater + + + : 30 cpx clots TT-04 83mn74 Qhv Table Top early Holocene flow at base TT-05 u173r1 Qhv Table Top early Holocene TT-06 83mn75 Qhv Table Top early Holocene flow at base TT-07 3 Qhv Table Top early Holocene TT-08 ul65r1 Qhv Table Top early Holocene TT-09 83mn76 Qhv Table Top early Holocene flow at base y TT-10 83mn77 Qhv Table Top early Holocene flow at base + + 50 WB-01 u26s1 Qhv Wide Bay Cone early Holocene WB-02 u24s1 Qhv Wide Bay Cone early Holocene WB-03 u145r1 Qhv Wide Bay Cone early Holocene WB-04 4 Qhv Wide Bay Cone early Holocene WB-06 u202r Qhv Wide Bay Cone early Holocene Appendix 2 - Whole Rock Analyses Samples are listed alphabetically by map number. All analy- ses are by XRF at DGGS, Fairbanks. Major elements are re- ported normalized volatile free, with the original LOI and totals preserved. Those samples with FeO have FeO determined by standard titration methods. Where weight gained by the oxidation of iron exceeds water dissolved in the rock LOI is negative. Those samples with complete trace element analyses were ana- lyzed by Nye at UCSC. For these trace element analyses con- centrations are accurate to at least 5% relative or 1 ppm, whichever is greater. In addition, V, Cr, Ni, Ba and Ce are accurate to 3% relative, but are no better than + 2-3 ppm Detection limits for all elements are a few ppm except for Ni and Ba, which have limits of 5-10 ppm due to tube inter- ferences. Precision is much better than accuracy Those samples with only Rb, Sr, Y, Zr and Nb reported were analyzed by B. Farris at the DGGS XRF laboratory. Precision and accuracy are similar to the UCSC values DGGS and UCSC data from samples analyzed in both labs com- Pare favorably, with the exception of Nb, where DGGS data are systematically 1-2 ppm higher than UCSC data. It is un- clear which lab produces the most accurate Nb data. K, P and Ti are calculated from the major element data. Makushin whole rock compositions - normalized map no. field no. sio2 Ti02 A203 Fe203 Fed MnO MgO Cao Na20 K20 P205 LOI Total Rb K Ba sr La Ce Nd Y P 2r Nb Ti Vv Cr Ni FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y 2r/Nb 2r/Y Y/Nb 83nqg63 50.55 0.85 16.46 10.84 0.19 7.29 10.72 2.45 0.52 0.13 98.86 4283 574 5094 83mq85 54.13 1.03 18.01 10.26 0.15 4.38 6.63 3.79 1.42 0.18 98.33 10 11820 367 21 799 79 5.7 615 83mn03 53.12 23 704 108 WR UN CW-01 u620b 51.32 0.94 19.23 8.45 1.77 0.22 4.27 9.32 3.22 1.00 0.27 0.00 97.89 8311 1159 5634 to 100% anhydrous CW-02 94482un LR-02 83mn65 Sess Sra SSSsaRe = ow Sor uUnwo ono = o S nu n X 11669 484 27 870 117 - original totais and LOIs LR-03 27r81m LR-04 u35r82 55.11 10328 5654 wr 1 LR-05 6271 56.24 1.03 17.43 11539 960 6175 LR-06a 83mn52 54.62 1.00 17.65 9.79 0.18 3.79 7.83 3.54 1.39 0.21 -0.41 100.57 28 11509 481 28 908 121 6.7 5996 2.32 0.44 0.058 27 115 6.5 590. 28 914 121 6.5 5971 LR-06e 83mn56 54.52 0.99 17.71 9.80 0.18 3.78 7.95 3.48 1.38 0.21 -0.02 100.24 27 11426 484 28 914 120 28 124 6.7 6010 2.36 0.45 0.059 LR-07 83mn40 54.31 0.99 17.83 9.91 0.18 3.76 8.11 3.38 1.33 0.19 -0.46 100.03 25 11070 492 26 825 114 12-Apr-85 Makushin whole rock compositions - map no. field no. $i02 Ti02 AL203 Fe203 Fed MnO MgO Cad. Na20 K20 P205 Lol Total FeO*/MgO Ca0/Al203 K/Rb Rb/Sr Ba/La Rb/Y Rb/Zr Ce/Y Zr/Nb 2r/Y Y/Nb ARBRERSSSe Boomwemnroun . 10129 1091 LR-09 m3 LR-10 u186r1 56.59 1.00 17.51 2.35 1094 6010 ws 2 nN £3 y BLSESLSLSR coomwnwouw = ° LR-12a 1-360 31 952 140 7.2 6063 normalized to 100% anhydrous - LR-12b 1-409 56.94 957 152 original totals and LOIs LR-12c 1-465 57.46 1.04 16.93 9.29 0.18 2.82 6.42 3.94 1.70 0.22 -0.11 99.89 37 14113 379 34 960 163 7.5 6235 2.96 0.38 381 0.098 1.09 0.23 RRS Mon wr 2 LR-12d d1-520 = So SOO-Wane =oON Nam GERASRZeS 3 Su BS w a 959 LR-12e 1-584 57.70 1.02 17.01 9.14 960 6112 LR-12f 1-635 57.63 1.02 17.05 9.15 0.18 2.71 6.32 3.97 1.74 0.22 0.32 100.06 36 14482 370 35 963 163 7.3 6131 3.04 0.37 402 0.097 ° nw REN Oonw LR-12g 1-721 57.53 1.03 17.04 9.21 0.18 2.71 6.41 3.98 1.68 0.22 -0.02 99.94 13952 961 6177 LR-12h 1-745 57.61 1.04 17.03 ° ao gE Seervere SS QSRNRRYIS 379 35 960 166 6234 3.05 0.37 384 0.100 UPw OnN LR-12i d1-792 57.61 1.04 17.00 9.19 0.18 2.69 6.38 3.94 1.74 0.22 0.08 99.97 14461 961 6242 -07 ow LR-12j 1-820 57.54 1.03 17.18 9.12 0.18 2.65 6.39 3.95 1.74 0.22 -0.35 99.65 37 14445 380 35 960 163 7.3 6175 3.10 0.37 390 0.097 ° Ao RRND onw Boo-uons SCWNM NOW cs FAWOns 14737 1001 6338 ow w N 12-Apr-85 Makushin whole rock compositions - normalized to 100% anhydrous - original totals and LOIs map no. field no. sio2 Tio02 A203 Fe203 Fed MnO MgO Cao Na20 K20 P205 LOI Total Rb K Ba sr La Ce Nd Y P zr Nb Ti v Cr Ni FeO*/MgO Ca0/AlL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Zr/Nb 2r/Y Y/Nb LR-12m 1-874 57.53 1.03 17.09 9.18 SNASEIS 0. 2. 6. 3. 1. 0. -0. 99.72 37 14346 380 35 1003 163 LR-12n 1-931 57.48 1.03 16.92 9.28 0.18 eorwon SRABES 99.80 37 14569 373 35 963 160 LR-13 83mq102 55.87 1.00 17.31 9.52 0.18 3.40 7.32 3.64 1.56 0.20 -0.24 100.33 26 12960 497 109 LR-14a u203r5 58.30 1.17 17.30 3.89 7008 3.26 0.35 69130 LR-14b u203r7 59.43 1.09 16.82 2.34 5.34 0.19 2.30 5.93 4.55 1.71 0.30 0.00 100.32 14233 1305 6514 M1-01 83mn41 59.38 1.10 16.58 8.71 0.18 2.04 5.48 4.39 1.89 0.25 -0.38 100.42 42 15730 357 40 1082 178 7.7 660; 3.84 0.33 375 0.118 1.05 0.24 UTD nue M1-02 ui90r1 59.44 1.08 17.19 1.61 5.75 0.19 2.22 6.03 4.42 1.74 0.31 -0.04 99.96 14477 6504 we 3 M1-03 u52r82 60.62 1.12 16.31 15194 6705 M1-05 83mn63 59.23 1.10 16.85 8.65 0.18 1.98 5.47 4.31 1.96 0.26 -0.16 100.66 42 16303 354 39 1125 179 7.4 6600 1-07 83mn66 62.77 NOOO Ny sss on ARKIFSSSR SOON FO = o uw 19705 306 45 1127 210 M1-13b mdb 62.18 1.07 16.00 1.70 5.27 0.19 1.50 4.52 5.12 2.17 0.28 0.30 100.12 13 18016 577 20 1222 62 5.8 6415 4.53 0.28 1386 0.023 0.65 0.21 M1-51b m43b 58.49 1.13 17.53 2.02 5.52 0.18 2.14 6.49 4.61 1.65 0.24 0.22 99.86 35 13698 385 37 1047 160 7.2 6774 M1-51c m3c 63.55 0.94 15.96 1.86 4.31 0.18 1.34 4.23 5.17 2.20 0.26 0.22 99.72 51 18264 297 45 1135 212 8.1 5635 4.47 0.27 0.172 M1-51d m43f 58.44 1.11 17.66 2.57 5.12 0.19 2.15 6.35 4.56 1.62 0.23 0.48 99.48 35 13449 493 374 13 35 20 37 1004 162 5.8 665: 148 3.46 0.36 384 0.094 38 0.95 0.22 0.95 27.9 4.4 6.4 M2-08 83mn67 65.58 0.75 15.58 6.27 0.17 1.03 3.29 4.55 2.56 0.21 1.35 101.01 50 21241 268 NERS oor 12-Apr-85 Makushin whole rock compositions - normalized to 100% anhydrous - original totals and LOIs map no. field no. sid2 Ti02 A203 Fe203 Fed MnO MgO Cao Na20 K20 P205 Lol Total FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Zr/Nb zr/Y Y/Nb M2-09 u29r82 54.42 1.01 16.44 9649 6059 M2-10 u45r82 60.89 1.16 BSoosnunoandad WeWRMOorWoe FAISREGNSRRS 15121 6938 M2-11 u49r82 58.52 1.12 17.25 6703 M2-12 21 62.59 0.99 15.30 1.69 5.37 0.19 1.89 4.67 4.87 2.09 0.35 0.18 100.82 17349 1527 5934 M2-15 10 53.79 0.92 19.19 3.20 5.05 7555 786 5516 M2-16 83mn83 53.78 912 122 6739 2.43 0.45 426 0.056 0.89 0.20 0.00 17.4 4.4 4.0 M2-17 u57s1 53.00 1.06 18.56 6375 2.08 0.51 19891 we 4 M2-25 u66r82 Booowwonro =o > GERSREIS 2° a & 6296 M2-26 u67r82 2.68 POSOWOFOD ESBS e ° 8219 6360 M2-32a u208r1 53.71 1.02 18.04 2.86 6.70 0.28 4.32 8.48 3.43 0.95 0.20 0.00 99.72 7909 875 6132 SeooOmWNWOoOUM OuNs = BYRSNRVHRG = ° 11705 1135 5875 M2-51a m43a 63.02 1.00 15.96 3.23 3.47 0.18 1.48 4.34 4.98 2.11 0.23 0.54 99.40 49 17516 298 41 1004 205 7.7 599! M2-52a u28r82a 57.97 1.09 17.70 2.35 5.49 0.18 2.57 7.09 3.85 1.48 0.23 0.44 97.85 12272 6524 M2-52b = -M2-52c u28r82b u28r82c 57.37 63.25 1.22 0.98 16.96 15.66 3.63 2.66 6.16 3.94 0.20 0.17 2.65 1.89 6.31 4.70 3.68 4.46 1.52 2.00 0.30 0.29 0.81 0.86 97.45 99.39 12628 16598 7320 5902 3.56 3.35 0.37 0.30 12-Apr-85 Makushin whole rock compositions - normalized map no. field no. s$i02 Tio2 A203 Fe203 Feo MnO MgO CaO Na20 kK20 P205 LOI Total Zr Nb Ti Vv Cr Ni FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Zr/Nb 2r/Y Y/Nb M2-52d u28r82d 64.36 0.96 15.55 1.60 4.68 0.18 1.52 4.27 4.43 2.20 0.25 0.00 98.18 18264 5740 M2-53 u646 61.15 1.16 15.77 5.28 3.63 0.13 3.24 5.65 2.38 1.46 0.15 2.13 103.53 1.4 12090 6935 2.58 0.36 8636 M2-54 M2-55 = M3-13a 645 u642 m4a 62.75 64.19 49.96 0.62 1.01 1.04 16.45 16.14 18.91 0.00 2.87 6.90 6.47 2.76 3.18 0.16 0.15 0.19 2.54 1.36 5.12 9 10.17 1 3.49 25 5 0.88 14 7 0.15 -00 0.47 0.47 45 100.82 99.07 0.35 13 18678 17820 7307 600 608 655 3700 6070 «6236 2.55 3.9% 1.83 0.30 0.25 0.54 50915 562 to 100% anhydrous M3-13c m4c 53.45 1.13 18.04 3.15 6.20 0.20 4.21 8.43 3.79 1.15 0.25 0.22 100.84 9547 1091 6774 - original totals and LOIs M3-24 u64r82 51.19 1.04 18.87 5.92 4.45 0.21 5.29 @-COndo vin > SSaaAvs 6226 6220 we 5 M4-27a 19464 56.02 1.02 17.77 3.18 5.29 0.20 3.69 8.30 3.11 1.18 0.23 0.00 98.08 9818 1023 6112 M4-27b u194r5 55.25 1.00 18.47 4.60 4.22 0.17 3.36 8.11 3.61 1.01 0.19 0.00 98.85 8398 839 6004 M4-29 u34sl 57.25 0.90 17.27 2.85 4.96 0.18 3.97 7.50 3.32 1.54 0.25 0.00 99.71 12822 1094 5411 M4-30 u36sl 56.86 0.90 17.70 2.74 4.90 0.17 3.99 7.53 3.64 1.42 0.15 0.00 100.24 11760 653 5383 4824 3.47 0.29 105419 M4-32 u208r2 53.72 1.02 18.65 6.28 2.94 0.18 4.14 8.47 3.41 1.01 0.18 0.00 100.23 8365 784 6100 ey aS M4-33 u48s1 54.02 1.07 18.13 3.50 5.50 0.20 4.38 8.54 3.46 1.03 0.19 -0.06 100.40 0.46 8513 6389 1.97 0.47 18506 M4-34 u207r1 56.34 1.08 18.34 2.54 4.66 0.17 2.89 8.62 3.63 1.47 0.26 0.57 100.71 0.14 12175 6501 2.40 0.47 86968 12-Apr-85 v Makushin whole rock compositions - map no. field no. sio2 Ti02 Al203 Fe203 FeO MnO MgO Cad Na20 K20 P205 LOI Total Rb K Ba sr La Ce Nd Y P zr Nb Ti Vv cr Ni FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Zr/Nb 2r/Y Y/Nb M4-36 u647 52.01 1.14 18.62 5.50 4.73 0.18 4.74 9.25 3.17 0.44 0.21 1.09 102.06 0.97 3618 6806 2.04 0.50 3730 M5-04 mis 53.19 1.05 19.09 2.29 6.27 0.18 3.36 10.19 3.24 0.97 0.16 1.32 100.90 25 8054 408 22 698 83 5.9 6296 2.48 0.53 322 0.061 M5-05 u634 53.22 1.01 17.57 6040 cae as M5-14 u59s1 55.25 1.08 18.94 5.36 4.10 0.14 3.10 7.72 2.76 1.22 0.35 0.87 100.87 10096 6494 M5-18 83mn11 53.65 1.03 18.15 10.08 0.18 3.82 8.14 3.47 1.25 0.23 70.15 99.94 25 10368 464 27 1003 119 6.9 6169 2.38 0.45 415 0.054 0.93 0.21 Wan OnRN normalized to 100% anhydrous - M5-19 83mn10 53.92 0.77 17.98 9.26 0.16 4.67 8.65 3.05 1.40 0.13 0.32 100.28 23 11627 573 15 568 6.5 4618 1.78 0.48 506 0.040 = o- mUwW - s ee ru WouU AW original totals and LOIs M5-20 83mn09 53.84 0.91 x 48 Per here © BREABSS = ° oo w 0 13958 410 23 611 117 6.8 5460 1.80 0.52 358 0.095 1.70 0.33 wud Ron we 6 M5-21 83mq24 53.43 0.98 16.75 10.43 0.18 5.20 8.59 3.13 1.15 0.15 0.18 99.71 24 9509 427 25 658 107 6.4 5903 1.80 0.51 396 0.056 oo WER OWN M5-22 83mq25 55.57 1.01 17.34 9.63 RONEARUS WeROB2N=& SSomunus w ° 12297 410 34 874 136 6.9 6060 2.47 0.43 410 0.073 MS-23 83mq27 55.72 0.98 17.42 9.50 0.18 3.48 7.43 3.57 1.51 0.20 -0.22 100.53 29 12524 417 30 866 135 6.7 5891 2.45 0.43 432 0.070 0.97 0.21 RRS uns Mc-01 u201r1 50.69 0.88 12.16 2.54 7.39 0.20 10.30 12.51 2.43 0.72 0.19 0.00 99.16 5957 817 5299 Mc-02 u163r1 56.15 0.95 18.49 4.47 3.64 0.16 3.25 8.10 3.25 1.29 0.25 0.98 100.98 10670 5703 ° 5433 Mc-04 Mc-05 u152r1 — 83mn80 49.84 48.43 0.95 0.97 18.13 18.72 4.10 10.95 5.64 0.17 0.17 6.72 6.71 10.90 10.65 2.54 2.69 0.81 0.61 0.19 0.11 0.16 -0.23 100.16 100.15 8 6756 5045 631 15 478 50 4.7 5722 5793 1.39 1.47 0.60 0.57 631 0.013 0.53 0.16 10.6 3.3 3.2 12-Apr-85 Makushin whole rock compositions - normalized to 100% anhydrous - original totals and LOIs map no. field no. sio2 Ti02 A203 Fe203 Fed MnO MgO Cao Na20 k20 P205 Lol Total Rb K Ba sr La Ce Nd Y Pp zr Nb Ti v Cr Ni FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/Z2r Ce/Y Zr/Nb 2r/Y Y/Nb Mc-06 83mn79 48.61 -09 -83 23 23+ 18 75 74 -86 57 +15 -16 -06 SOCONoKO = Oo. 11 4722 500 653 Mc-07 83mn78 48.20 0.94 18.45 11.14 0.17 7.38 10.39 2.62 0.62 0.10 -0.16 100.29 9 5124 655 13 434 48 4.5 5610 1.36 0.56 569 0.014 Mc-08 u160r1 49.48 0.88 16.89 3.94 5.52 0.18 8.65 11.10 2.53 0.69 0.15 -0.10 99.90 5694 5261 ai Mc-09 m32 49.56 0.92 17.97 3.91 5.74 0.18 7.36 10.60 2.81 0.78 0.17 1.13 100.86 12 6475 611 742 ul67r1 RaaRSBe WWW SOONSS=OW WANS = 2 Mc-11a u158r2 48.53 0.97 18.98 4.60 = coononouw -uNUWe BUFNSsS 1.17 101.17 4418 5839 Mc-11b u158r3, 49.10 Anew SISRORES 5025 5866 we Mc- 13 5 wu SNooNnBos = SNRRSENESSREG 8 Soon 7140 611 5156 Mc-18 m30 49.27 0.89 17.39 3.50 6.07 0.18 8.06 10.93 2.83 0.74 0.13 0.28 100.72 9 6144 227 550 8 13 8 15 567 51 3.6 5336 258 130 40 1.14 0.63 683 0.016 28 0.60 Md-10 3 = o = wu PWOROANNOR oo NOV CANON SURALLSRSS oo = wn 98.93 w on 12352 417 28 1193 141 7.8 5886 927 155 Md-16 m16 54.26 1.05 16.89 3.53 5.21 0.17 5.24 8.74 3.29 1.41 0.20 0.87 99.52 32.1 11697 395 407 Md-20 51.83 0.91 18.28 3.10 6.12 0.17 5.81 10.26 2.64 0.74 0.14 0.96 99.93 6123 617 5452 12-Apr-85 Makushin whole rock compositions - map no. field no. sio2 Ti02 AL203 Fe203 Fed MnO MgO Cao Na20 kK20 P205 LOI Total FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Zr/Nb 2r/Y Y/Nb Me-01 m34 53.15 Me-02 m35 52.72 0.99 18.79 2.45 Me-03 m36 54.09 0.96 18.49 2.98 5.36 0.18 4.16 8.78 3.63 1.18 0.20 0.09 99.40 19.9 9780 364 553 10 26 15 26 879 107 4.7 5735 254.4 18.1 11.1 Me-05 m38 52.82 1.00 18.61 2.79 5.93 0.18 878 5972 o- sek normalized to 100% anhydrous - Me-06 m39 259.4 143.7 63.8 1.20 0.66 612 0.023 original totals and LOIs Me-07 m40 61.62 1.11 15.99 Soozyvrzoce SRSGaNVBRRS we & Me-09 m2 51.48 1.01 18.55 4.35 4.97 0.18 4.94 10.22 3.15 0.97 0.17 1.15 99.71 19 8086 497 21 753 a1 6.6 6083 1.80 0.55 426 0.038 0.90 0.21 Wwrw NWO Mf-01 m5 53.33 0.94 17.37 3.17 5.32 0.16 5.41 9.44 3.10 1.56 0.19 0.20 99.09 28 12928 443 566 16 34 18 Mf-02 m46 53.61 1.04 18.26 2.84 6.05 0.19 4.23 9.18 3.45 0.98 0.16 0.15 98.79 23 8164 789 Mf-05 m9 51.07 0.94 18.72 3.40 5.36 0.17 5.09 10.60 3.24 1.20 0.22 0.36 100.60 14.7 9938 245 619 18 1 18 958 65.2 3.3 5622 255.6 65.8 22.6 1.65 0.57 676 0.024 Mf-16 61.02 0.75 18.52 0.00 5.60 0.12 2.21 6.35 3.59 1.71 0.14 0.00 99.58 14172 614 4515 Mf-17 mk15 50.90 0.65 15.60 0.00 9.16 0.18 9.58 10.06 2.75 0.91 0.21 0.00 100.59 7593 911 3874 12-Apr-85 Makushin whole rock compositions - map no. field no. s$io2 Ti02 A203 Fe203 Fed MnO Mgo Cao Na2o K20 P205 LOI Total Rb K Ba sr La Ce Nd ¥. P 2r Nb Ti Vv cr Ni, FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y 2r/Nb 2r/Y Y/Nb Mf-20 11 53.97 1.20 18.35 3.51 5.32 0.18 3.81 8.52 3.81 0.98 0.35 0.34 100.05 8136 1528 7195 Mg-01 6 50.96 0.55 16.35 3.21 4.91 0.14 9.83 10.93 2.11 0.89 0.12 0.60 100.30 7389 524 3298 Mg-03 18 60.23 0.82 16.40 3.50 873 4916 83mn49 Nop o: SLSRASIQE Susowrso = qq g wun NWeo Mg-05 83mn36 55.22 26 744 144 7.3 5413 1.96 0.46 353 0.110 0.31 wus aun Mg-06 83mn39 55.20 0.98 17.52 9.55 0.16 4.01 7.41 3.07 1.92 0.18 0.74 100.18 47 15945 413 28 790 162 8.5 5848 2.14 0.42 339 0.114 Mg-07 83mn34 58.09 1.09 17.40 8.79 0.18 2.42 6.17 4.22 1.71 0.23 0.02 100.14 37 14179 376 37 1003 161 6.6 6527 3.74 0.35 383 0.098 o=- no wns nm Es ane we 9 Mg-08 83mn33 52.31 0.93 16.59 10.10 0.16 6.79 8.92 2.59 1.46 0.14 0.25 100.09 33 12140 406 22 612 116 6.3 5584 1.34 0.54 368 0.081 o- ri es Wuo Une normalized to 100% anhydrous - original totais and LOIs Mh-05 83mn23 49.03 0.73 18.42 9.74 0.15 7.27 11.17 2.48 0.84 0.17 -0.01 99.99 13 6973 628 13 742 5.2 4376 1.21 0.61 536 0.021 i? 739 70 5.3 5255 2.01 0.46 656 0.022 0.94 0.23 Wan ran PC-02 m21 51.60 0.95 19.21 3.25 5.67 0.18 5.06 9.41 3.32 1.16 0.19 0.16 98.83 9629 829 5695 PC-03 83mn82 50.66 0.92 18.90 10.37 0.17 5.29 9.35 3.07 1.12 0.16 -0.10 100.16 16 9274 707 15 696 5.4 5501 PC-04 83mn84 53.66 0.85 20.96 7.82 0.15 2.58 8.58 3.72 1.46 0.21 -0.15 99.70 19 12139 765 918 19 875 5.7 5351 v 2.47 0.42 571 0.029 Wak Wen PC-06 83mn86 50.20 0.70 14.36 10.33 0.18 9.72 11.17 2.32 0.89 0.12 0.08 99.60 14 7424 565 13 526 52 5.2 4217 0.96 0.78 530 0.025 o=- no NO@ neo uco 12-Apr-85 Makushin whole rock compositions - Map no. field no. sio2 Tio2 AL203 Fe203 Fed MnO MgO Cad Na20 k20 P205 LoL Total FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y 2r/Nb zr/Y Y/Nb PC-07 7 51.44 0.89 18.43 3.32 6.06 785 5335 PC-08 83mn29 53.64 0.91 20.06 8.55 0.16 3.04 8.21 3.70 1.52 0.21 -0.24 100.09 20 913 87 5.5 5438 2.53 0.41 599 0.029 1.05 0.24 Wea ARO Pc-09 83mn25 49.96 0.66 13.72 10.44 0.17 10.64 11.25 2.20 0.84 0.13 -0.13 100.42 13 6935 538 13 564 48 5.2 3935 0.88 0.82 533 0.024 o- no NS nwo uinn Pc-10 83mn24 53.80 21 1045 90 5.6 5205 2.51 0.40 617 0.028 0.95 0.22 Wen Cwm PC-11 m20 54.97 0.89 19.73 2.32 4.63 0.17 3.03 8.39 4.16 1.47 0.24 0.02 100.71 12205 1048 5336 normalized to 100% anhydrous - PC-12 83mn28 53.68 0.91 19.92 8.61 0.16 3.02 8.23 3.74 1.52 0.21 -0.19 100.14 21 12577 723 20 913 89 6.1 5438 2.57 0.41 WUD Fa original totals and LOIs PC-13 83mn27 52.79 0.91 19.28 9.49 0.17 3.96 8.47 3.47 1.30 0.18 0.01 100.37 18 10753 630 783 we 10 PC-14 83mn26 52.92 0.95 18.87 9.70 0.18 4.13 8.21 3.49 1.35 0.19 0.10 99.99 21 11220 616 20 830 83 5.9 5702 2.11 0.44 534 0.034 o=- aa WR nyo PC-15 u58s1 54.41 0.94 19.50 2.95 4.75 0.18 3.99 8.11 3.51 1.40 0.27 0.00 101.76 11628 1162 5618 at ae 11356 5230 PC-50 u5154h 50.09 0.98 22.32 0.00 9.70 0.18 7.76 6.22 2.44 0.19 0.12 0.00 99.27 1577 524 5875 1270 7221 PK-02 m2 59.41 1.23 16.58 2.01 6.03 0.21 2.22 5.52 4.81 1.72 0.26 0.24 99.93 38 14279 524 356 17 37 23 41 1135 PK-03 u638a 49.05 0.94 18.21 4.02 5.66 0.18 6.95 11.45 2.56 0.80 0.18 -0.07 99.97 0.04 6653 5656 1.33 0.63 166318 PK-04 u638c 12-Apr-85 Makushin whole rock compositions map no. field no. sio2 Ti02 A203 Fe203 Fed MnO MgO Cad Na20 K2o P205 LOI Total Rb K Ba sr La Ce Nd Y p zr Nb Ti Vv Cr Ni FeO*/MgO Ca0/AL203 K/Rb Rb/Sr Ba/La Rb/Y Rb/2r Ce/Y Z2r/Nb 2r/Y Y/Nb PK-05 94782un SL-01 u6281 53.45 0.90 17.32 3.62 4.65 0.16 6.35 9.83 2.96 0.56 0.20 0.00 97.80 4649 873 5396 SL-02 u55r82 53.90 0.98 18.94 3.42 5.49 0.19 4.27 8.03 3.36 1.08 0.35 0.62 10 100.98 8934 5854 TT-01 ul64r3 49.51 0.95 17.98 3.89 5.76 0.18 6.53 11.40 2.79 0.83 0.17 0.18 100.52 0.34 6892 5705 1.42 0.63 20271 TT-02 83mn73 48.95 0.94 18.29 11.09 0.18 5.89 11.12 2.57 0.83 0.15 -0.08 99.93 13 6890 592 19 655 62 5.8 5635 1.69 0.61 530 0.022 0.21 wwe WuAn TT-04 83mn74 48.47 0.95 18.69 11.00 0.19 5.83 11.31 2.57 0.84 0.15 -0.17 100.18 14 6949 574 20 652 61 5.8 5675 1.70 0.61 496 0.024 0.70 0.23 wwe Row TT-05 ul73r1 49.06 0.96 18.94 4.10 5.66 0.19 6.10 11.41 2.53 0.82 0.22 0.00 99.65 6831 963 5775 wr 11 TT-06 83mn75 48.27 0.94 18.92 10.97 0.19 5.80 11.35 2.59 0.83 0.16 -0.19 100.19 14 6864 578 20 696 61 5.9 5614 1.70 0.60 490 0.024 oo nh wo WWo row - normalized to 100% anhydrous - original totais and LOis TT-07 3 49.64 0.96 17.85 6.72 3.61 0.20 6.42 11.23 2.41 0.76 0.20 0.56 100.28 6309 873 5755 TT-08 ul65r1 48.92 0.95 18.57 3.74 6.02 0.18 6.49 11.47 2.67 0.81 0.17 0.46 100.69 0.23 6732 5712 1.45 0.62 29270 TT-09 83mn76 48.38 0.93 18.50 11.08 0.19 6.07 11.42 2.48 0.81 0.14 -0.17 100.05 13 6710 571 19 610 61 6.4 5563 1.64 0.62 516 0.023 Wwo oOnuw TT-10 83mn77 48.37 0.93 18.66 11.11 0.19 5.95 11.34 2.50 0.82 0.14 -0.35 99.94 13 6788 585 19 609 60 5.6 5559 1.68 0.61 522 0.022 5863 1.23 0.65 13676 WB-02 u24s1 49.45 0.92 16.71 76 53 -18 -30 56 -76 15 +20 41 SOCON=MOUW ° 0.21 6316 5521 1.07 0.70 30074 WB-03 ul45r1 49.58 0.88 16.39 -14 -18 +22 -03 31 = +18 -00 -50 SSCONNMOR = ° 6030 782 5249 12-Apr-85 Makushin whole rock compositions - Map no. WB-04 field no. cCauno dS " Nin byl BSSNEQSSLEVD sid2 Tio2 A203 Fe203 Fed MnO MgO CaO Na20 K20 P205 LOI Total ~ geen ry ‘ REESIENES : gg S N PBB 7S Ti 5875 5276 FeO*/MgO 1.16 Ca0/AL203 048 0.70 K/Rb Rb/Sr Ba/La Rb/Y Rb/Zr Ce/Y 2r/Nb 2r/yY Y/Nb normalized to 100% anhydrous - original totais and LOIs Appendix 3 - Mineral Analyses Mineral analyses are reported in the order plagioclase, olivine, Ca-rich clinopyroxene, orthopyroxene, pigeonite and magnetite/spinel. Analyses within each group are alphabet- ized by map number. Cores and rims from the same grain are enclosed by parentheses Olivine and plagioclase data are recast into atomic amounts assuming that there is no Fe*?. Pyroxenes are recalculated by the method of Lindsley (1983), where non-quadrilateral components and Fe** are calculated stoichiometrically. Spinels are recalculated on the ulvospinel basis and assume that the minerals are stoichiometrically correct. Analyses were obtained from the Washington State University fully automated Cameca microprobe. Those analyses from sam- ples with field numbers starting with "m" are by S.E. Swan- son, all others are by C.J. Nye. Makushin plagioclase compositions LR-11 mig (core 3 wt% oxides sio2 53.93 AL203 25.91 FeO 0.65 Cad 9.56 Na20 5.49 K20 0.42 tot 95.96 atoms per 8 oxygens Si 2.5370 Al 1.4370 Fe 0.0256 Ca 0.4819 Na 0.5008 K 0.0252 tot 5.0075 An 0.4904 Ab 0.4969 Or 0.0250 LR-11 m19 rim) LR-11 mig (core 7 43.14 32.88 0.71 16.96 1.47 0.05 95.21 2.0961 1.8834 0.0289 0.8830 0.1385 0.0031 5.0330 0.8644 0.1352 0.0030 LR-11 mig mid 54.02 26.07 0.59 9.29 5.75 0.33 96.05 2.5365 1.4432 0.0232 0.4674 0.5235 0.0198 5.0135 0.4717 0.5180 0.0196 LR-11 11.56 4.76 0.25 95.81 2.4157 1.5527 0.0246 0.5881 0.4382 0.0151 5.0346 0.5730 0.4208 0.0145 LR-11 mig (core 19 50.87 26.46 0.50 9.37 5.25 0.29 92.74 2.4775 1.5192 0.0204 0.4890 0.4958 0.0180 5.0198 0.4965, 0.4944 0.0180 LR-11 mg rim) 20 52.71 25.57 0.64 8.27 5.83 0.42 93.44 2.5409 1.4532 0.0258 0.4272 0.5449 0.0258 5.0179 0.4394 0.5461 0.0259 pl 1 LR-11 m9 25 58.39 24.41 0.81 6.56 7.34 0.89 98.40 2.6641 1.3130 0.0309 0.3207 0.6494 0.0518 5.0299 0.3306 0.6355 0.0507 LR-11 mio gms 29 53.22 27.36 0.98 10.16 5.61 0.41 97.74 2.4720 1.4983 0.0381 0.5057 0.5053 0.0243 5.0436 0.5002 0.4881 0.0235 M1-51c m43c (core 56.20 26.45 0.50 9.09 6.03 0.27 98.54 2.5640 1.4226 0.0191 0.4444 0.5334 0.0157 4.9992 0.4545 0.5369 0.0158 M1-51¢c m3c rim) 2 55.61 26.31 0.51 9.15 6.05 0.28 97.91 2.5565 1.4259 0.0196 0.4507 0.5393 0.0164 5.0084 0.4553 0.5358 0.0163 M1-51c m3c (core 3 55.58 26.68 0.50 10.03 5.58 0.26 98.63 2.5396 1.4372 0.0191 0.4911 0.4944 0.0152 4.9965 0.4983 0.4941 0.0151 M1-5ic m43c rim) 4 56.31 26.54 0.43 9.56 5.91 0.27 99.02 2.5587 1.4217 0.0163 0.4655 0.5207 0.0157 4.9986 0.4720 0.5198 0.0156 15-May-85 Makushin plagioclase compositions M1-51d m3 (core 14 wt% oxides sio2 47.11 Al203 32.33 Fed 0.55 Cao 16.45 Na20 1.96 K20 0.03 tot 98.43 atoms per 8 oxygens Si 2.1989 Al 1.7790 Fe 0.0215 Ca 0.8227 Na 0.1774 K 0.0018 tot 5.0012 An 0.8226 Ab 0.1771 Or 0.0018 M1-51d m3f rim) 15 48.44 31.07 0.70 15.58 2.66 0.07 98.52 2.2566 1.7064 0.0273 0.7777 0.2403 0.0042 5.0124 0.7640 0.2351 0.0041 M1-51d m43f (core 16 50.95 29.55 0.62 13.69 3.88 0.09 98.78 2.3539 1.6095 0.0240 0.6777 0.3476 0.0053 5.0179 0.6610 0.3373 0.0051 M1-51d m3f rim) 17 48.74 31.24 0.69 15.26 2.76 0.08 98.77 2.2620 1.7092 0.0268 0.7588 0.2484 0.0047 5.0099 0.7534 0.2454 0.0047 M1-51d m43t (core 18 47.40 32.36 0.69 16.29 2.09 0.05 98.88 2.2032 1.7732 0.0268 0.8113 0.1884 0.0030 5.0059 0.8116 0.1879 0.0030 M1-51d m43f rim) 19 47.34 32.12 0.72 16.45 2.15 0.04 98.82 2.2042 1.7631 0.0280 0.8207 0.1941 0.0024 5.0125 0.8087 0.1908 0.0023 M1-S1d m3f (core 20 47.99 31.38 0.61 15.76 2.52 0.05 98.31 2.2406 1.7273 0.0238 0.7884 0.2281 0.0030 5.0113 0.7756 0.2238 0.0029 pl 2 M1-51d m3 rim) 21 46.94 31.88 0.82 16.25 2.10 0.07 98.06 2.2033 1.7642 0.0322 0.8173 0.1911 0.0042 5.0123 0.8105 0.1887 0.0041 Mc-18 m30 (core 22 46.73 32.63 0.73 16.49 1.89 0.07 98.54 2.1821 1.7963 0.0285 0.8251 0.1711 0.0042 5.0074 0.8282 0.1711 0.0042 Mc-18 m30 rim) 23 49.36 29.85 1.11 14.10 3.52 0.20 98.14 2.3081 1.6456 0.0434 0.7065 0.3192 0.0119 5.0346 0.6888 0.3076 0.0115 Mc-18 m30 (core 24 45.32 33.31 0.82 17.27 1.49 0.06 98.27 2.1300 1.8456 0.0322 0.8697 0.1358 0.0036 5.0169 0.8650 0.1346 0.0036 Mc-18 30 rim) 25 52.40 27.78 1.09 12.00 4.53 0.29 98.09 2.4334 1.5209 0.0423 0.5971 0.4079 0.0172 5.0187 0.5941 0.3990 0.0168 Mc-18 m30 19 55.48 26.68 1.19 10.05 5.72 0.47 99.59 2.5254 1.4318 0.0453 0.4902 0.5049 0.0273 5.0248 0.4926 0.4938 0.0267 Mc-18 m30 21 52.87 28.04 1.40 11.71 4.57 0.33 98.92 2.4352 1.5226 0.0539 0.5779 0.4082 0.0194 5.0172 0.5861 0.4059 0.0193 Md-04 m04 (core 18 53.68 27.67 0.72 11.20 4.63 0.38 98.28 2.4734 1.5030 0.0277 0.5530 0.4137 0.0223 4.9931 0.5721 0.4183 0.0226 15-May-85 Makushin plagioclase compositions Md-04 m04 rim) 19 wt% oxides sio2 54.10 A203 26.91 Fed 0.87 cad 10.62 Na20 4.87 K20 0.38 tot 97.75 atoms per 8 oxygens Si 2.5038 Al 1.4683 Fe 0.0337 Ca 0.5266 Na 0.4370 K 0.0224 tot 4.9918 An 0.5465 Ab 0.4432 Or 0.0228 Md-04 m04 (core 20 54.60 27.01 0.61 10.42 5.20 0.45 98.29 2.5108 1.4643 0.0235 0.5134 0.4637 0.0264 5.0021 0.5255 0.4620 0.0263 Md-04 m04 rim) 21 Md-04 22 54.18 27.19 1.01 10.60 5.46 0.38 98.82 2.4884 1.4723 0.0388 0.5217 0.4863 0.0223 5.0297 0.5176 0.4720 0.0216 Md-04 2.4682 1.5057 0.0385 0.5414 0.4278 0.0223 5.0040 0.5586 0.4315 0.0225 Md-14 mi4 (core 52.11 29.19 0.70 12.55 4.14 0.25 98.94 2.3952 1.5818 0.0269 0.6181 0.3690 0.0147 5.0057 0.6262, 0.3683 0.0146 Md-14 mi4 rim) 54.06 28.14 0.78 11.25 5.21 0.40 99.84 2.4587 1.5089 0.0297 0.5483 0.4595 0.0232 5.0282 0.5441 0.4457 0.0225 Md-14 mi4 (core 54.89 27.26 0.65 10.73 5.37 0.41 99.31 2.5022 1.4650 0.0248 0.5241 0.4747 0.0238 5.0146 0.5248 0.4642 0.0233 Md-14 m4 rim) 54.66 27.60 0.69 11.03 4.94 0.40 99.32 2.4907 1.4827 0.0263 0.5385 0.4365 0.0233 4.9979 0.5523 0.4372 0.0233 Md-14 mi4 (core 53.70 28.32 0.75 11.80 4.87 0.40 99.84 2.4447 1.5199 0.0286 0.5756 0.4299 0.0232 5.0219 0.5725 0.4179 0.0226 Md-14 mi4 rim) 54.65 27.10 0.60 10.75 5.29 0.41 98.80 2.5035 1.4636 0.0230 0.5277 0.4699 0.0240 5.0116 0.5290 0.4600 0.0235 Md-14 m4 gms 52.99 28.28 0.97 12.28 4.23 0.26 99.01 2.4332 1.5309 0.0372 0.6042 0.3766 0.0152 4.9973 0.6160 0.3781 0.0153 Md-14 m4 gins 51.98 29.13 0.99 12.75 4.07 0.26 99.18 2.3889 1.5783 0.0381 0.6279 0.3627 0.0152 5.0110 0.6339 0.3606 0.0152 Md- 14 mi4 gms 59.66 24.82 0.82 7.14 7.52 0.45 100.41 2.6645 1.3068 0.0306 0.3417 0.6512 0.0256 5.0205 0.3441 0.6394 0.0252 Me-03 m36 (core 14 45.37 33.32 0.51 17.34 1.62 0.04 98.20 2.1317 1.8457 0.0200 0.8730 0.1476 0.0024 5.0204 0.8554 0.1443 0.0023 15-May-85 Makushin plagioclase compositions Me-03 m36 rim) 15 wt% oxides sio2 54.12 Al203 27.14 Fed 0.84 Cao 11.03 Na20 5.30 K20 0.31 tot 98.74 atoms per 8 oxygens Si 2.4870 Al 1.4703 Fe 0.0323 Ca 0.5431 Na 0.4722 K 0.0182 tot 5.0231 An 0.5349 Ab 0.4569 Or 0.0176 Me-03 m36 (core 16 46.64 32.46 0.65 16.83 1.95 0.08 98.61 2.1794 1.7882 0.0254 0.8427 0.1767 0.0048 5.0172 0.8267 0.1725 0.0047 Me-03 36 rim) 17 55.63 26.10 1.02 10.10 5.66 0.33 98.84 2.5462 1.4083 0.0390 0.4953 0.5023 0.0193 5.0105 0.4965 0.4940 0.0189 Me-03 m6 gms 18 54.62 26.37 0.95 10.24 5.55 0.31 98.04 2.5226 1.4358 0.0367 0.5067 0.4970 0.0183 5.0171 0.5048 0.4863 0.0179 Me-03 36 19 56.02 25.97 0.95 9.48 5.95 0.41 98.78 2.5617 1.4000 0.0363 0.4645 0.5276 0.0239 5.0140 0.4682 0.5193 0.0235 Me-06 m9 (core 50.76 26.74 0.47 10.27 5.06 0.13 93.43 2.4582 1.5267 0.0190 0.5329 0.4751 0.0080 5.0200 0.5287, 0.4676 0.0079 Me-06 m39 rim) 55.83 24.32 0.65 7.53 6.85 0.32 95.50 2.6254 1.3483 0.0256 0.3794 0.6246 0.0192 5.0224 0.3779 0.6104 0.0188 Me-06 m39 core 51.82 25.89 0.65 9.50 5.65 0.17 93.68 2.5014 1.4733 0.0262 0.4914 0.5288 0.0105 5.0316 0.4816 0.5131 0.0102 Me-06 m39 core 52.80 26.08 0.62 9.26 5.79 0.20 94.75 2.5158 1.4650 0.0247 0.4728 0.5349 0.0122 5.0253 0.4692 0.5245 0.0119 Me-06 m39 (core 50.03 26.62 0.49 10.15 5.10 0.10 92.49 2.4490 1.5362 0.0201 0.5324 0.4841 0.0062 5.0280 0.5238 0.4733 0.0061 Me-06 m39 rim) 52.55 25.08 0.61 8.19 5.88 0.20 92.51 2.5546 1.4374 0.0248 0.4266 0.5543 0.0124 5.0100 0.4349 0.5580 0.0125 Me-06 m39 (core 10 53.58 27.72 0.53 10.87 4.96 0.15 97.81 2.4752 1.5097 0.0205 0.5381 0.4443 0.0088 4.9965 0.5477 0.4482 0.0089 Me-06 m9 rim) 1 54.63 27.05 0.53 10.42 5.51 0.17 98.31 2.5095 1.4649 0.0204 0.5129 0.4908 0.0100 5.0084 0.5110 0.4842 0.0098 Me-06 m39 (core 14 54.14 27.70 0.61 10.96 5.33 0.12 98.86 2.4783 1.4949 0.0234 0.5376 0.4731 0.0070 5.0143 0.5319 0.4649 0.0069 Me-06 39 rim) 15 53.16 28.05 0.59 11.35 5.00 0.13 98.28 2.4511 1.5247 0.0228 0.5607 0.4470 0.0076 5.0139 0.5564 0.4402 0.0075 15-May-85 Makushin plagioclase compositions Me-06 39 gms 16 wt% oxides sio2 58.30 AL203 24.44 Fed 1.23 Cao 8.14 Na20 6.24 K20 0.37 tot 98.72 atoms per 8 oxygens Si 2.6522 Al 1.3108 Fe 0.0468 Ca 0.3968 Na 0.5504 K 0.0215 tot 4.9784 An 0.4189 Ab 0.5682 Or 0.0222 Me-06 m9 gms 19 56.13 26.01 0.79 8.98 6.27 0.25 98.43 2.5692 1.4036 0.0302 0.4404 0.5565 0.0146 5.0145 0.4418 0.5502 0.0144 Me-07 m0 (rim 1 51.49 28.97 1.41 12.85 3.94 0.30 98.96 2.3787 1.5778 0.0545 0.6361 0.3529 0.0177 5.0177 0.6431 0.3506 0.0176 Me-07 m0 core) 45.20 33.18 0.95 17.54 1.49 0.09 98.45 2.1250 1.8390 0.0374 0.8836 0.1358 0.0054 5.0261 0.8668 0.1325 0.0053 Me-07 m40 (rim 50.72 28.95 1.33 13.20 3.94 0.30 98.44 2.3604 1.5883 0.0518 0.6582 0.3555 0.0178 5.0321 0.6493 0.3447 0.0173 Me-07 m0 core) 44.29 34.11 0.76 18.09 1.10 0.04 98.39 2.0841 1.8923 0.0299 0.9121 0.1004 0.0024 5.0211 0.9009. 0.0989 0.0024 Me-07 m0 (rim 50.14 29.24 1.19 13.45 3.91 0.20 98.13 2.3414 1.6098 0.0465 0.6730 0.3540 0.0119 5.0367 0.6553 0.3408 0.0115 pl 5 Me-07 m40 core) 43.92 33.91 0.76 18.23 1.20 0.06 98.08 2.0769 1.8904 0.0301 0.9237 0.1100 0.0036 5.0347 0.8936 0.1061 0.0035 Me-07 m40 51.28 28.70 1.31 13.06 4.11 0.24 98.70 2.3777 1.5688 0.0508 0.6488 0.3695 0.0142 5.0298 0.6372 0.3579 0.0137 Me-07 m0 gms 55.19 26.97 0.90 10.14 5.41 0.57 99.18 2.5187 1.4510 0.0343 0.4958 0.4787 0.0332 5.0118 0.5088 0.4750 0.0329 Me-07 m0 52.64 28.01 1.08 11.56 4.72 0.54 98.55 2.4339 1.5268 0.0418 0.5727 0.4232 0.0319 5.0302 9.5751 0.4117 0.0310 Mf-01 m5 (core 13 52.92 28.17 0.67 11.48 4.66 0.36 98.26 2.4434 1.5334 0.0259 0.5680 0.4172 0.0212 5.0091 0.5765 0.4146 0.0211 Mf-01 m5 (core 15 53.55 28.15 0.56 11.41 4.76 0.41 98.84 2.4557 1.5219 0.0215 0.5607 0.4233 0.0240 5.0070 0.5698 0.4199 0.0238 Mf-01 m45 rim) 16 49.03 30.30 0.88 14.56 3.01 0.21 97.99 2.2934 1.6709 0.0344 0.7297 0.2730 0.0125 5.0140 0.7277 0.2689 0.0123 15-May-85 Makushin plagioclase compositions Mf-01 m5 gms 17 wt% oxides Si02 49.33 Al203—- 29.94 Fed 0.88 Cao 14.22 Na20 3.17 K20 0.23 tot 97.77 atoms per 8 oxygens Si 2.3106 Al 1.6533 Fe 0.0345 Ca 0.7137 Na 0.2879 K 0.0137 tot 5.0136 An 0.7126 Ab 0.2836 Or 0.0135 Mf-01 m5 gms 18 wu o Ho8 SRASAsSE = Nown= © Mf-04 m8 (core 12 51.96 28.70 1.38 12.54 4.18 0.26 99.02 2.3961 1.5603 0.0532 0.6196 0.3738 0.0153 5.0183 0.6238 0.3705 0.0152 Mf-04 (core Mf-04 m8 gms 14 52.76 27.92 1.24 11.25 4.80 0.39 98.36 2.4414 1.5231 0.0480 0.5578 0.4307 0.0230 5.0239 0.5643 0.4258 0.0228 Pc-02 m21 (core 17 46.68 32.59 0.71 16.84 2.06 0.09 98.97 2.1752 1.7903 0.0277 0.8408 0.1861 0.0054 5.0254 0.8188 0.1803 0.0052 PC-02 m21 rim) 18 53.11 27.72 1.01 11.54 4.87 0.36 98.61 2.4503 1.5077 0.0390 0.5705 0.4357 ‘ 0.0212 5.0243 0.5670 0.4241 0.0206 PC-02 m21 (core Sonstonh SISRAAS 2.1875 1.7717 0.0330 0.8382 0.1883 0.0041 5.0228 0.8166 0.1827 0.0040 Pc-02 m21 rim 20 47.22 31.93 0.99 15.84 2.31 0.12 98.41 2.2088 1.7609 0.0387 0.7939 0.2095 0.0072 5.0191 0.7912 0.2073 0.0071 Pc-02 m21 rim) 21 53.37 27.77 1.11 11.26 5.06 0.31 98.88 2.4546 1.5057 0.0427 0.5549 0.4512 0.0182 5.0273 0.5515 0.4405 0.0178 PC-02 m21 gms 15 53.12 27.63 1.17 11.51 4.77 0.33 98.53 2.4529 1.5042 0.0452 0.5695 0.4271 0.0194 5.0183 0.5714 0.4204 0.0191 Pc-02 m21 gms 16 54.11 27.24 1.15 11.01 5.14 0.41 99.06 2.4822 1.4732 0.0441 0.5412 0.4572 0.0240 5.0218 0.5421 0.4472 0.0235 PC-11 m20 (core 46.44 32.76 0.68 16.84 1.85 0.08 98.65 2.1692 1.8040 0.0266 0.8428 0.1676 0.0048 5.0149 0.8342 0.1651 0.0047 15-May-85 Makushin plagioclase compositions PC-11 m20 rim) 2 wt% oxides $io2 56.74 Al203. 26.23 Fed 0.82 Cad 9.61 Na20 5.95 K20 0.51 tot 99.86 atoms per 8 oxygens Si 2.5654 Al 1.3981 Fe 0.0310 Ca 0.4656 Na 0.5216 K 0.0294 tot 5.0111 An 0.4716 Ab 0.5131 Or 0.0289 PC-11 m20 (core Pc-11 m20 rim) 4 52.35 28.82 0.73 12.06 4.35 0.22 98.53 2.4131 1.5661 0.0281 0.5957 0.3888 0.0129 5.0047 0.6051 0.3898 0.0130 PC-11 m20 (core 46.64 32.59 0.74 16.51 1.96 0.05 98.49 2.1800 1.7959 0.0289 0.8269 0.1776 0.0030 5.0123 0.8232 0.1763 0.0030 PC-11 m20 rim) 55.87 26.13 0.76 8.97 5.89 0.48 . 98.10 2.5656 1.4146 0.0292 0.4414 0.5245 0.0281 5.0034 0.4570 0.5277 0.0283 PC-11 m20 gms 53.12 27.91 0.91 11.07 5.01 0.24 98.26 2.4532 1.5196 0.0351 0.5478 - 0.4486 0.0141 5.0184 0.5498 0.4439 0.0140 PC-11 m20 gms 54.98 26.49 0.93 9.83 5.77 0.47 98.47 2.5277 1.4358 0.0358 0.4842 0.5144 0.0276 5.0254 0.4849 0.5012 0.0269 pl 7 PK-02 m52 (rim 48.35 28.63 0.59 11.69 4.06 0.11 93.43 2.3534 1.6429 0.0240 0.6097 0.3832 0.0068 5.0201 0.6099 0.3833 0.0068 PK-02 m52 core) 51.86 26.09 0.49 9.34 5.20 0.20 93.18 2.5077 1.4873 0.0198 0.4839 0.4876 0.0123 4.9986 0.4981 0.4956 0.0125 PK-02 m52 (core 53.90 28.23 0.55 11.28 4.80 0.20 98.96 2.4633 1.5210 0.0210 0.5524 0.4254 0.0117 4.9947 0.5650 0.4299 0.0118 2.5970 1.3678 0.0386 0.4432 0.5240 0.0212 4.9917 0.4583 0.5301 0.0214 PK-02 m52 (core 54.58 27.67 0.50 10.94 5.20 0.17 99.06 2.4897 1.4880 0.0191 0.5347 0.4599 0.0099 5.0013 0.5376 0.4579 0.0098 PK-02 m52 rim) 53.07 27.95 0.62 11.38 4.93 0.17 98.12 2.4517 1.5223 0.0240 0.5633 0.4416 0.0100 5.0129 0.5606 0.4351 0.0099 PK-02 m52 gms 55.07 26.86 0.94 10.25 5.54 0.22 98.88 2.5186 1.4483 0.0360 0.5023 0.4913 0.0128 5.0093 0.5055 0.4882 0.0128 PK-02 m52 gms 54.62 26.53 0.86 10.14 5.54 0.23 97.92 2.5220 1.4442 0.0332 0.5017 0.4960 0.0135 5.0107 0.5028 0.4905 0.0134 15-May-85 Makushin plagioclase compositions PK-02 m52 gms 1 wt% oxides sio2 51.53 Al203. 26.71 FeO 0.79 Cao 9.76 Na20 5.23 K20 0.19 tot 94.21 atoms per 8 oxygens Si 2.4744 “AL 1.5120 Fe 0.0317 Ca 0.5022 Na 0.4870 K 0.0116 tot 5.0189 An 0.5077 Ab 0.4866 Or 0.0116 TT-22 m29 (core 17 45.61 32.61 0.92 17.40 1.48 0.06 98.08 2.1492 1.8116 0.0363 0.8785 0.1352 0.0036 5.0144 0.8666 0.1329 0.0035 TT-22 m29 rim) 18 51.00 28.92 1.04 13.32 4.09 0.24 98.61 2.3666 1.5821 0.0404 0.6623 0.3680 0.0142 5.0335 0.6428 0.3523 0.0136 TT-22 m29 (core 19 0.83 17.57 1.52 0.07 98.70 2.1307 1.8353 0.0325 0.8820 0.1381 0.0042 5.0228 0.8646 0.1348 0.0041 TT-22 m29 rim) 20 55.27 26.60 0.85 9.69 5.79 0.44 98.64 2.5329 1.4371 0.0326 0.4758 0.5145 0.0257 5.0187 0.4805 0.5064 0.0253 TT-22 m29 gms 50.23 29.55 0.94 13.77 3.49 0.21 98.19 2.3393 1.6225 0.0366 0.6872 0.3152 0.0125 5.0132 0.6856 0.3106 0.0123 TT-22 m29 15 54.43 28.10 1.13 11.10 4.97 0.38 100.11 2.4678 1.5020 0.0428 0.5392 0.4369 0.0220 5.0107 0.5524 0.4377 0.0220 TT-22 m29 gms 16 61.02 23.07 1.07 5.13 7.94 1.18 99.41 2.7474 1.2246 0.0403 0.2475 0.6932 0.0678 5.0208 0.2631 0.6874 0.0672 - WB-05 m22 (core 17 47.31 31.48 0.83 16.35 2.19 0.08 98.24 2.2175 1.7396 0.0325 0.8212 0.1990 0.0048 5.0146 0.8049 0.1942 0.0047 WB-05 m22 rim) 18 50.57 29.33 1.12 13.61 3.57 0.22 98.42 2.3503 1.6071 0.0435 0.6778 0.3217 0.0130 5.0135 0.6781 0.3177 0.0129 WB-05 m22 (core 19 45.89 32.78 0.56 16.98 1.58 0.08 97.87 2.1596 1.8187 9.0220 0.8562 0.1442 0.0048 5.0055 0.8559 0.1434 0.0048 WB-05 m22 rim) 20 53.37 27.21 1.14 11.03 5.03 0.38 98.16 2.4716 1.4856 0.0442 0.5473 0.4517 0.0225 5.0227 0.5479 0.4422 0.0220 WB-05 m22 gins 15 53.31 27.15 1.28 11.30 4.72 0.36 98.12 2.4707 1.4834 0.0496 0.5612 0.4242 0.0213 5.0103 0.5695 0.4214 0.0211 WB-05 m22 gms 16 63.21 22.96 0.97 5.04 6.91 1.98 101.07 2.7908 1.1951 0.0358 0.2384 0.5916 0.1115 4.9632 0.2873 0.6283 0.1185 Makushin olivine compositions LR-02 83mn65 core 1012 wt% oxides sio2 36.58 Ti02 0.01 AlL203 0.04 FeO 31.51 MnO 0.64 MgO 31.33 CaO 0.23 NiO 0.04 Cr203 0.02 tot 100.40 atoms per 4 oxygens Si 0.9945 Ti 0.0002 Al 0.0013 Fe2+ 0.7164 Mn = 0.0147 Mg = 1.2694 Ca 0.0067 Ni 0.0009 Cr 0.0004 tot 3.0045 Fo 0.6392 Fa 0.3608 LR-02 83mn65 (core 1013 38.28 0.01 0.04 22.91 0.44 39.10 0.16 0.09 0.03 101.06 0.9896 0.0002 0.0012 0.4953 0.0096 1.5064 0.0044 0.0019 0.0006 3.0093 0.7526 0.2474 LR-02 83mn65 rim) 1014 37.70 0.01 0.22 26.38 0.54 34.63 0.19 0.00 0.00 99.67 1.0044 0.0002 0.0069 0.5878 0.0122 1.3750 0.0054 0.0000 0.0000 2.9919 0.7005 0.2995 LR-02 83mn65 (core 1015 36.93 0.00 0.03 29.15 0.59 33.65 0.21 0.01 0.00 100.57 0.9903 0.0000 0.0009 0.6537 0.0134 1.3447 0.0060 0.0002 0.0000 3.0093 0.6729 0.3271 LR-02 83mn65 (core 1017 36.83 0.01 0.02 30.19 0.61 32.72 0.20 0.11 0.04 100.73 0.9915 0.0002 0.0006 0.6797 0.0139 1.3127 0.0058 0.0024 0.0009 3.0076 0.6589 0.3411 LR-02 83mn65 rim) 1018 36.99 0.06 0.03 30.30 0.68 32.15 0.18 0.03 0.01 100.43 0.9985 0.0012 0.0010 0.6840 0.0155 1.2934 0.0052 0.0007 0.0002 2.9997 0.6541 0.3459 ol 1 LR-06a 83mn52 (core 1113 38.51 0.01 0.02 22.78 0.42 38.57 0.14 0.05 0.00 100.50 0.9993 0.0002 0.0006 0.4944 0.0092 1.4916 0.0039 0.0010 0.0000 3.0002 0.7511 0.2489 LR-06a 83mn52 rim) 1114 37.43 0.02 0.04 30.36 0.70 33.03 0.24 0.02 0.01 101.85 0.9951 0.0004 0.0013 0.6750 0.0158 1.3087 0.0068 0.0004 0.0002 3.0038 0.6597 0.3403 LR-O06a 83mn52 (core 1115 38.51 0.01 0.02 22.78 0.42 38.57 0.14 0.05 0.00 100.50 0.9993 0.0002 0.0006 0.4944 0.0092 1.4916 0.0039 0.0010 0.0000 3.0002 0.7511 0.2489 LR-06a 83mn52 rim) 1116 37.43 0.02 0.04 30.36 8.70 33.03 0.24 0.02 0.01 101.85 0.9951 0.0004 0.0013 0.6750 0.0158 1.3087 0.0068 0.0004 0.0002 3.0038 0.6597 0.3403 LR-06a 83mn52 (core 1117 38.73 0.01 0.02 19.35 0.31 41.51 0.13 0.06 0.01 100.13 0.9930 0.0002 0.0006 0.4149 0.0067 1.5861 0.0036 0.0012 0.0002 3.0064 0.7927 0.2073 LR-06a 83mn52 rim) 1118 37.18 0.00 0.04 27.86 0.49 34.46 0.17 0.04 0.00 100.24 0.9933 0.0000 0.0013 0.6225 0.0111 1.3721 0.0049 0.0009 0.0000 3.0060 0.6879 0.3121 LR-06a 83mn52 core 1119 38.30 0.00 0.01 25.05 0.44 37.76 0.16 0.02 0.02 101.76 0.9921 0.0000 0.0003 0.5427 0.0097 1.4576 0.0044 0.0004 0.0004 3.0076 0.7287 0.2713 LR-06a 83mn52 core 1120 38.19 0.01 0.04 23.22 0.39 39.02 0.16 0.09 0.00 101.12 0.9880 0.0002 0.0012 0.5024 0.0085 1.5045 0.0044 0.0019 0.0000 3.0112 0.7497 0.2503 15-May-85 Makushin olivine compositions LR_OSf LR_O6F 83mn57 — 83mn57 (core rim) 1122 1123 wt% oxides sio2 38.33. 37.08 Tio2 0.00 0.00 Al203 0.04 0.05 Fed 24.38 31.29 MnO 0.41 0.63 MgO 38.41 30.03 Cad 0.17 0.28 NiO 0.09 0.00 cr203 0.00 0.00 tot 101.83 99.36 atoms per 4 oxygens Si 0.9894 1.0159 Ti 0.0000 0.0000 Al 0.0012 0.0016 Fe2+ 0.5263 0.7169 Mn 0.0090 0.0146 Mg 1.4776 = 1.2261 Ca 0.0047 0.0082 Ni 0.0019 0.0000 Cr 0.0000 0.0000 tot 3.0100 2.9833 Fo 0.7374 0.6310 Fa 0.2626 0.3690 LR_06f 83mn57 (core 1124 38.44 0.01 0.02 22.91 0.42 38.96 0.17 0.04 0.00 100.97 0.9938 0.0002 0.0006 0.4953 0.0092 1.5011 0.0047 0.0008 0.0000 3.0057 0.7519 0.2481 LR_06f 83mn57 rim) 1125 36.80 0.02 0.06 32.12 0.73 31.10 0.27 0.02 0.00 101.12 0.9955 0.0004 - 0.0019 0.7267 0.0167 1.2538 0.0078 0.0004 0.0000 3.0032 0.6331 0.3669 LR-11 m9 (core 15 35.28 0.03 26.22 0.52 34.54 0.19 96.78 0.9755 0.0000 0.0010 0.6063 0.0122 1.4233 0.0056 3.0240 0.7013 0.2987 LR-11 m9 rim) 17 37.88 0.65 24.65 0.40 38.58 0.30 102.46 0.9733 0.0000 0.0197 0.5297 0.0087 1.4773 0.0083, 3.0169 0.7361 0.2639 LR-12b DI-409 core 1050 37.71 0.03 0.05 28.01 0.57 34.93 0.17 0.04 0.01 101.52 0.9940 0.0006 0.0016 0.6175 0.0127 1.3722 0.0048 0.0008 0.0002 3.0045 0.6897 0.3103 ol 2 LR-12b DI-409 core 1052 38.02 0.03 0.03 25.66 0.49 37.45 0.14 0.07 0.00 101.89 0.9873 0.0006 0.0009 0.5573 0.0108 1.4494 0.0039 0.0015 0.0000 3.0116 0.7223 0.2777 LR-12b DI-409 micro 1054 38.68 0.00 0.02 20.81 0.40 40.42 0.19 0.05 0.00 100.57 0.9942 0.0000 0.0006 0.4473 0.0087 1.5484 0.0052 0.0010 0.0000 3.0055 0.7758 0.2242 LR-12n DI-931 core 1054 37.02 0.02 0.01 28.69 0.57 34.01 0.17 0.01 0.01 100.51 0.9908 0.0004 0.0003 0.6422 0.0129 1.3566 0.0049 0.0002 0.0002 3.0085 0.6787 0.3213 LR-12n DI-931 core 1056 37.28 0.04 0.07 27.90 0.57 34.98 0.20 0.05 0.00 101.09 0.9879 0.0008 0.0022 0.6183 0.0128 1.3815 0.0057 0.0011 0.0000 3.0102 0.6908 0.3092 M1-01 83mn41 (core 1012 37.17 0.02 0.07 26.20 0.49 35.91 0.15 0.06 0.00 100.07 0.9876 0.0004 0.0022 0.5822 0.0110 1.4219 0.0043 0.0013 0.0000 3.0109 0.7095 0.2905 M1-01 83mn41 rim) 1013 37.37 0.04 0.05 * 26.60 0.49 35.40 0.20 0.00 0.00 100.15 0.9931 0.0008 0.0016 0.5912 0.0110 1.4020 0.0057 0.0000 0.0000 3.0053 0.7034 0.2966 M1-01 83mn41 core 1014 37.44 0.00 0.01 24.39 0.43 37.75 0.19 0.00 0.02 100.23 0.9843 0.0000 0.0003 0.5363 0.0096 1.4791 0.0054 0.0000 0.0004 3.0153 0.7339 0.2661 1-01 83mn41 rim 1015 37.25 0.05 0.06 27.22 0.56 34.35 0.17 0.01 0.01 99.68 0.9979 0.0010 0.0019 0.6098 0.0127 1.3714 0.0049 0.0002 0.0002 3.0001 0.6922 0.3078 15-May-85 Makushin olivine compositions M1-51d m3f core 1 wt% oxides Si02 37.32 Tio2 nd AL203 nd FeO =. 26.15 Mno 0.60 MgO 36.48 Cad 0.20 NiO nd cr203 nd tot 100.75 atoms per 4 oxygens Si 0.9847 Ti nd Al nd Fe2+ 0.5770 Mn 0.0134 Mg 1.4345 Ca 0.0057 Ni nd cr nd tot 3.0153 Fo 0.7131 Fa 0.2869 M1-51d m3 rim 2 37.41 nd nd 26.42 0.56 36.00 0.20 nd nd 100.59 0.9893 nd nd 0.5843 0.0125 1.4188 0.0057 nd nd 3.0107 0.7083 0.2917 M1-51id m3 core 12 38.20 nd nd 24.10 0.49 38.38 0.18 nd nd 101.35 0.9899 nd nd 0.5223 0.0108 1.4822 0.0050 nd nd 3.0101 0.7394 0.2606 M1-51d m43f rim 13 38.48 nd nd 23.98 0.37 39.21 0.15 nd nd 102.19 0.9871 nd nd 0.5145 0.0080 1.4991 0.0041 nd nd 3.0129 0.7445 0.2555 Mc-18 m30 (core 1 38.01 nd nd 23.54 0.48 38.44 0.28 nd nd 100.75 0.9892 nd nd 0.5123 0.0106 1.4909 0.0078 nd nd 3.0108 0.7442 0.2558 Mc-18 m30 rim) 2 37.90 25. 0. 36. 0. BERGLRAB 100.26 0.9979 nd nd 0.5514 0.0114 1.4342 0.0073, nd nd 3.0021 0.7223 0.2777 Mc-18 m30 (core 38.75 19.87 0.34 42.20 0.21 101.37 0.9840 0.4220 0.0073 1.5970 0.0057 3.0160 0.7910 0.2090 ol 3 Mc-18 m30 rim) 4 37.42 nd nd 26.28 0.63 35.25 0.20 nd nd 99.78 0.9972 nd nd 0.5857 0.0142 1.4000 0.0057 nd nd 3.0028 0.7050 0.2950 Mc-18 m30 (core 38.62 20.12 0.37 41.60 0.19 100.90 0.9866 0.4299 0.0080 1.5838 0.0052 3.0134 0.7865 0.2135 Mc-18 m30 rim) 37.95 22.91 0.40 39.39 0.21 nd 100.86 0.9836 0.4966 0.0088 1.5215 0.0058 3.0164 0.7539 0.2461 Mc-18 m30 core 7 38.43 nd nd 18.53 0.36 43.55 0.28 nd nd 101.15 0.9737 nd nd 0.3927 0.0077 1.6445 0.0076 nd nd 3.0263 0.8073 0.1927 Mc-18 m30 core 8 38.61 “ond nd 18.95 0.34 43.66 0.19 nd nd 101.75 0.9736 nd nd 0.3996 0.0073 1.6408 0.0051 nd nd 3.0264 0.8041 0.1959 Mc-18 m30 core 37.71 22.74 0.49 39.37 0.25 nd 100.56 0.9808 0.4946 0.0108 1.5260 0.0070 3.0192 0.7552 0.2448 Md-04 m04 (core 14 36.65 30.59 0.48 32.83 0.17 100.72 0.9879 0.6896 0.0110 1.3188 0.0049 3.0121 0.6567 0.3433 Md-04 m04 rim) 15 35.65 37.26 0.76 26.04 0.23 99.94 1.0031 nd 0.8768 0.0181 1.0920 0.0069 2.9969 0.5546 0.4454 15-May-85 Makushin olivine compositions Md-04 m04 (core 16 wt% oxides sio2 35.60 Ti02 nd Al203 nd FeO 33.58 MnO 0.65 MgO = 30.39 Cao 0.19 NiO nd Cr203 nd tot 100.41 atoms per 4 oxygens Si 0.9798 Ti nd Al nd Fe2+ 0.7730 Mn 0.0152 Mg 1.2466 Ca 0.0056 Ni nd cr nd tot 3.0202 Fo 0.6173 Fa 0.3827 Md-04 m04 rim) 17 36.27 nd nd 34.91 0.67 28.74 0.27 nd nd 100.86 0.9976 nd nd 0.8031 0.0156 1.1781 0.0080 nd nd 3.0024 0.5947 0.4053 Me-03 m36 core 1 37.52 nd nd 26.05 0.44 36.58 0.15 nd nd 100.74 0.9882 nd nd 0.5738 0.0098 1.4358 0.0042 nd nd 3.0118 0.7145 0.2855 Me-03 m36 rim 37.46 28.42 0.45 34.95 0.24 nd nd 101.52 0.9896 0.6279 0.0101 1.3760 0.0068 3.0104 0.6867 0.3133 Me-03 m36 core 38.40 23.28 0.32 38.80 0.17 100.97 0.9939 0.5039 0.0070 1.4966 0.0047 3.0061 0.7481 0.2519 Me-03 m36 rim 6 37.49 nd nd 27.11 0.47 35.14 0.25 nd nd 100.46 0.9952 nd nd 0.6018 0.0106 1.3902 0.0071 nd nd 3.0048 0.6979 0.3021 Me-03 m36 core 37.32 26.28 0.53 36.05 0.21 nd 100.39 0.9885 0.5821 0.0119 1.4230 0.0060 3.0115 0.7097 0.2903 ol 4 Me-03 m36 rim 10 37.43 nd nd 27.74 0.58 34.48 0.21 nd nd 100.44 0.9971 nd nd 0.6180 0.0131 1.3688 0.0060 nd nd 3.0029 0.6890 0.3110 Me-07 m0 (core 12 36.20 nd nd 31.55 0.56 30.40 0.22 nd nd 98.93 1.0000 nd nd 0.7289 0.0131 1.2515 0.0065 nd nd 3.0000 0.6320 0.3680 Me-07 m40 rim) 13 35.62 32.73 0.56 30.56 0.18 nd 99.65 0.9838 0.7560 0.0131 1.2579 0.0053 3.0162 0.6246 0.3754 0.6205 0.0093 1.4338 0.0060 nd nd 3.0348 0.6979 0.3021 Me-07 m40 rim) 15 36.41 nd nd 29.69 0.56 34.28 0.18 nd nd 101.12 0.9748 nd nd 0.6648 0.0127 1.3678 0.0052 nd nd 3.0252 0.6729 0.3271 Me-07 m0 (core 16 36.61 nd nd 27.57 0.59 35.83 0.23 nd nd 100.83 0.9735 nd nd 0.6131 0.0133 1.4200 0.0066 nd nd 3.0265 0.6984 0.3016 Me-07 m0 rim) 17 36.20 nd nd 28.70 0.53 35.58 0.20 nd nd 101.21 0.9647 nd nd 0.6397 0.0120 1.4132 0.0057 nd nd 3.0353 0.6884 0.3116 Me-07 m0 (core 10 37.23 24.81 0.42 37.30 0.24 100.00, 0.9835 0.5482 0.0094 1.4686 0.0068 3.0165 0.7282 0.2718 15-May-85 Makushin olivine compositions Me-07 = Mf-01 m40 m45 rim) (core 11 7 wt% oxides si02 36.80 38.76 Ti02 nd nd Al203 nd nd FeQ =. 28.95 17.08 Mno 0.57 0.44 MgO =: 33.04 43.88 Cao 0.12 0.18 NiO nd nd Cr203 nd nd tot 99.48 100.34 atoms per 4 oxygens Si 0.9969 0.9827 Ti nd nd AL nd nd Fe2+ 0.6559 0.3622 Mn 0.0131 0.0094 Mg 1.3339 1.6580 Ca 0.0035 0.0049 Ni nd nd Cr nd nd tot 3.0031 3.0173 Fo 0.6704 0.8207 Fa 0.3296 0.1793 Mf-01 m5 rim) 37.45 25.81 0.42 36.62 0.21 100.51 0.9879 0.5694 0.0094 1.4396 0.0059 3.0121 0.7166 0.2834 Mf-01 m5 (core 39.17 15.22 0.24 45.62 0.20 nd nd 100.45 0.9825 0.3193 0.0051 1.7053 0.0054 3.0175 0.8423 0.1577 Mf-01 m5 rim) 10 38.23 21.60 0.32 39.05 0.23 99.43 0.9979 nd 0.4715 0.0071 1.5191 0.0064 3.0021 0.7631 0.2369 - Mf-04 m8 (core 38.19 19.97 0.43 41.59 0.25 nd nd 100.43 0.9811 0.4291 0.009% 1.5924 0.0069 3.0189 0.7877 0.2123 Mf-04 m8 rim) 38.60 20.47 0.45 40.58 0.22 nd 100.32 0.9935 0.4406 0.0098 1.5566 0.0061 3.0065 0.7794 0.2206 ol 5 Mf-04 m8 (core 38.34 20.19 0.32 40.83 0.31 S22 0.9893 0.4357 0.0070 1.5701 0.0086 3.0107 0.7828 0.2172 Mf-04 m8 rim 35.86 34.14 0.90 28.81 0.21 99.92 0.9948 0.7920 0.0211 1.1911 0.0062 3.0052 0.6006 0.3994 Mf-04 m8 rim) 36.49 28.39 0.61 35.14 0.23 nd 100.83 0.9743 0.6339 0.0138 1.3971 0.0066 3.0257 0.6879 0.3121 Mf-04 m8 (core 24 38.84 19.41 0.30 42.14 0.24 nd nd 100.93 0.9881 0.4130 0.0065 1.5978 0.0065 3.0119 0.7946 0.2054 Mf-04 m8 rim) 25 36.02 30.12 0.74 32.50 0.23 99.61 0.9832 0.6876 0.0171 1.3221 0.0067 nd 3.0168 0.6579 0.3421 Pc-02 m21 (core 1 37.78 nd nd 24.13 0.54 37.82 0.22 nd nd 100.49 0.9890 nd nd 0.5283 0.0120 1.4755 0.0062 nd nd 3.0110 0.7364 0.2636 PC-02 m21 rim) 37.62 25.17 0.54 37.13 0.28 nd 100.74 0.9875 0.5526 0.0120 1.4525 0.0079 3.0125 0.7244 0.2756 PC-02 m21 (core 38.13 23.42 0.42 38.77 0.23 nd 100.97 0.9889 0.5080 0.0092 1.4986 0.0064 3.0111 0.7468 0.2532 15-May-85 Makushin olivine compositions PC-02 PC-02 m21 m21 rim) (core 6 9 wt% oxides s$io2 37.74 38.02 Ti02 nd nd AL203 nd nd FeO 26.55 24.00 MnO 0.70 0.59 MgO 35.55 37.80 Cad 0.28 0.27 NiO nd nd cr203 nd nd tot 100.82 100.68 atoms per 4 oxygens Si 0.9961 0.9925 Ti nd nd Al nd nd Fe2+ 0.5860 0.5239 Mn 0.0156 0.0130 Mg 1.3983 1.4705 Ca 0.0079 0.0076 Ni nd nd cr nd nd tot 3.0039 3.0075 Fo 0.7047 0.7373 Fa 0.2953 0.2627 won eomon SRA2RBISh22; 8 0.9917 0.5726 0.0149 1.4207 0.0083 3.0083 0.7127 0.2873 PC-06 83mn86 (core 1027 39.43 0.00 0.12 13.69 0.29 45.92 0.22 0.12 0.05 99.84 0.9883 0.0000 0.0035 0.2870 0.0062 1.7152 0.0059 0.0024 0.0010 3.0095 0.8567 0.1433 PC-06 83mn86 rim) 1028 38.14 0.01 0.01 21.44 0.51 40.11 0.22 0.08 0.03 100.55 0.9856 0.0002 0.0003 0.4634 0.0112 1.5447 0.0061 0.0017 0.0006 3.0137 0.7693 0.2307 PC-06 PC-06 - PC-06 PC-06 PC-06 PC-06 83mn86 = 83mn86— 83mn86 = B3mnB6-— B3mn86 «=—-B3mnB6. 1029 to 1037 is profile across single crystal 1030 1031 1032 1033 1034 1035 39.91 39.86 39.65 40.12 39.86 40.11 0.01 0.00 0.00 0.51 0.02 0.03 0.02 0.02 0.03 0.31 0.03 0.02 12.51 12.42 12.31 12.78 12.36 12.10 0.24 0.16 0.19 0.16 0.22 0.24 47.43 47.00 47.64 47.55 47.15 47.96 0.17 0.13 0.19 0.17 0.15 0.17 0.12 0.17 0.13 0.13 0.17 0.14 0.04 0.00 0.00 0.04 0.04 0.04 100.45 99.76 100.14 101.77 100.00 100.81 0.9882 0.9928 0.9844 0.9811 0.9907 0.9877 0.0002 0.0000 0.0000 0.0094 0.0004 0.0006 0.0006 0.0006 0.0009 0.0089 0.0009 0.0006 0.2591 0.2587 0.2556 0.2614 0.2569 0.2492 0.0050 0.0034 0.0040 0.0033 0.0046 0.0050 1.7502 1.7446 1.7627 1.7329 1.7465 1.7600 0.0045 0.0035 0.0051 0.0045 0.0040 0.0045 0.0024 0.0034 0.0026 0.0026 0.0034 0.0028 0.0008 0.0000 0.0000 0.0008 0.0008 0.0008 3.0109 3.0069 3.0152 3.0047 3.0081 3.0111 0.8711 0.8709 0.8734 0.8689 0.8718 0.8760 0.1289 0.1291 0.1266 0.1311 0.1282 0.1240 ol 6 PC-06 83mn86 1036 39.34 0.00 0.06 12.35 0.18 47.12 0.17 0.13 0.02 99.37 0.9847 0.0000 0.0018 0.2585 0.0038 1.7578 0.0046 0.0026 0.0004 3.0142 0.8718 0.1282 PC-06 83mn86 rim) 1037 38.98 0.02 0.06 17.10 0.41 41.05 0.20 0.09 0.00 97.91 1.0111 0.0004 0.0018 0.3710 0.0090 1.5869 0.0056 0.0019 0.0000 2.9876 0.8105 0.1895 PC-06 83mn86 core 1038 39.84 0.00 0.02 12.70 0.22 46.94 0.19 0.13 0.05 100.09 0.9908 0.0000 0.0006 0.2641 0.0046 1.7397 0.0051 0.0026 0.0010 3.0085 0.8682 0.1318 15-May-85 Makushin olivine compositions PC-06 83mn8&6 core 1039 wt% oxides sio2 39.87 Ti02 0.00 Al203 0.01 Fed 9.83 MnO 0.18 MgO = 49.08 CaO 0.19 NiO 0.19 Cr203 0.04 tot 99.39 atoms per 4 oxygens Si 0.9864 Ti 0.0000 Al 0.0003 Fe2+ 0.2034 Mn 0.0038 Mg = 1.8096, Ca 0.0050 Ni 0.0038 Cr _ 0.0008 tot 3.0131 Fo 0.8990 Fa 0.1010 PC-06 83mn86 core 1040 39.86 0.00 0.03 10.87 0.24 47.69 0.19 0.17 0.01 99.06 0.9934 0.0000 0.0009 0.2266 0.0051 1.7714 0.0051 0.0034 0.0002 3.0060 0.8866 0.1134 PC-06 83mn86 micro 1041 PC-06 83mn86 core 1042 39.02 0.01 0.03 15.86 0.28 44.31 0.20 0.11 0.02 99.84 0.9880 0.0002 0.0009 0.3359 0.0060 1.6721 0.0054 0.0022 0.0004 3.0111 0.8327 0.1673 PC-06 83mn86 core 1043 38.78 0.00 0.04 16.50 0.33 44.21 0.24 0.09 0.09 100.28 0.9816 0.0000 0.0012 0.3493 0.0071 1.6677 0.0065 0.0018 0.0018 3.0169 0.8268 0.1732 PC-09 83mn25 (core 1001 40.36 0.00 0.05 9.34 0.16 49.49 0.17 0.17 0.05 99.79 0.9911 0.0000 0.0014 0.1918 0.0033 1.8112 0.0045 0.0034 0.0010 3.0077 0.9042 0.0958 Pc-09 83mn25 core 1002 40.09 0.01 0.02 9.49 0.16 48.76 0.17 0.17 0.03 98.90 0.9940 0.0002 0.0006 0.1968 0.0034 1.8018 0.0045 0.0034 0.0006 3.0052 0.9015 0.0985 ol 7 PC-09 83mn25 mid 1003 40.36 0.00 0.02 10.28 0.18 48.61 0.18 0.15 0.07 99.85 0.9944 0.0000 0.0006 0.2118 0.0038 1.7849 0.0048 0.0030 0.0014 3.0046 0.8939 0.1061 PC-09 83mn25 rim) 1004 38.97 0.00 0.05 18.86 0.38 42.11 0.21 0.08 0.04 100.70 0.9915 0.0000 0.0015 0.4013 0.0082 1.5967 0.0057 0.0016 0.0008 3.0074 0.7991 0.2009 PC-09 83mn25 (core 1005 39.26 0.00 0.02 14.38 0.30 42.75 0.20 0.13 0.01 97.05 1.0140 0.0000 0.0006 0.3106 0.0066 1.6455 0.0055 0.0027 0.0002 2.9856 0.8412 0.1588 PC-09 83mn25 core) 1007 39.30 0.00 0.04 13.57 0.25 45.80 0.18 0.13 0.01 99.28 0.9899 0.0000 0.0012 0.2859 0.0053 1.7193 0.0049 0.0026 0.0002 3.0094 0.8574 0.1426 PC-09 83mn25 core 1008 38.79 0.00 0.07 15.57 0.28 44.80 0.16 0.14 0.03 99.84 0.9817 0.0000 0.0021 0.3296 0.0060 1.6898 0.0043 0.0028 0.0006 3.0169 0.8368 0.1632 PC-09 83mn25 (core 1009 39.64 0.00 0.05 11.75 0.19 48.03 0.18 0.14 0.04 100.02 0.9831 0.0000 0.0015 0.2437 0.0040 1.7752 0.0048 0.0028 0.0008 3.0158 0.8793 0.1207 Pc-09 83mn25 core) 1010 39.32 0.00 0.03 12.61 0.21 46.40 0.19 0.18 0.04 98.98 0.9894 0.0000 0.0009 0.2654 0.0045 1.7400 0.0051 0.0036 0.0008 3.0098 0.8677 0.1323 PC-09 83mn25 core 1011 39.79 0.04 0.02 10.33 0.18 48.65 0.25 0.19 0.10 99.55 0.9854 0.0007 0.0006 0.2140 0.0038 1.7957 0.0066 0.0038 0.0020 3.0125 0.8935 0.1065 15-May-85 Makushin olivine compositions TT-10 TT-10 TT-10 TT-10 TT-10 TT-10 TT-10 TT-10 TT-22 TT-22 TT-22 TT-22 WB-05 WB-05 WB-05 83mn77, 83mn77— 83mn77— 83mn77)— B3mn77— B3mn77— B3mn77 ~— B3mn77 m29 m29 m29 m29 m22 m22 m22 (core rim) (core rim) (core rim) (core rim) (core rim) (core rim) core rim core 1105 1106 1107 1108 1109 1110 1111 1142 9 10 11 12 1 2 3 wt% oxides sio2 37.88 37.77 37.41 37.07 = 38.12 36.31 37.96 36.86 38.11 35.99 38.31 36.51 38.61 37.67 = 38.21 Ti02 0.00 0.00 0.00 0.00 0.02 0.04 0.00 0.02 nd nd nd nd nd nd nd Al203 0.05 0.05 0.06 0.06 0.05 0.03 0.04 0.05 nd nd nd nd nd nd nd FeO 21.39 25.27 22.96 27.97 22.13 33.09 21.97 31.53 20.80 33.65 21.84 32.31 21.95 23.20 21.62 MnO 0.48 0.59 0.44 0.67 0.48 0.73 0.39 0.69 0.38 0.85 0.52 0.89 0.34 0.41 0.51 MgO 39.73 35.18 37.92 33.10 39.26 30.02 39.67 31.91 39.89 30.05 39.67 31.11 40.44 38.21 40.19 Cao 0.21 0.26 0.25 0.25 0.25 0.27 0.23 0.27 0.22 0.30 0.25 0.30 0.21 0.24 0.19 NiO 0.00 0.01 0.04 0.01 0.06 0.01 0.09 0.02 nd nd nd nd nd nd nd cr203 0.02 0.01 0.00 0.00 0.00 0.00 0.01 0.00 nd nd nd nd nd nd tot 99.76 99.14 99.08 99.13 100.37 100.50 100.36 101.35 99.40 100.84 100.59 101.12 101.55 99.73 100.72 atoms per 4 oxygens Si 0.9864 1.0073 0.9889 1.0032 0.9895 0.9944 0.9850 0.9918 0.9923 0.9864 0.9905 0.9902 0.9877 0.9894 0.9859 Ti 0.0000 0.0000 0.0000 0.0000 0.0004 0.0008 0.0000 0.0004 nd nd nd nd nd nd nd AL 0.0015 0.0016 0.0019 0.0019 0.0015 0.0010 0.0012 0.0016 nd nd nd nd nd nd nd Fe2+ 0.4658 0.5636 0.5076 0.6330 0.4804 0.7579 0.4768 0.7095 0.4529 0.7713 0.4722 0.7329 0.4696 0.5096 0.4665 Mn 0.0106 =0.0133 0.0099 0.0154 0.0106 .0.0169 0.0086 0.0157 0.0084 0.0197 0.0114 0.0204 0.0074 0.0091 0.0111 Mg 1.5419 1.3982 1.4939 1.3349 1.5188 91.2252 1.5342, 1.2797 1.5479 1.2274 91.5285 1.2575 1.5418 91.4957 1.5454 Ca 0.0059 0.0074 0.0071 0.0072 0.0070 0.0079 0.0064 0.0078 0.0061 0.0088 0.0069 0.0087 0.0058 0.0068 0.0053 Ni 0.0000 0.0002 0.0009 0.0002 0.0013 0.0002 0.0019 0.0004 nd nd nd nd nd nd nd Cr 0.0004 0.0002 0.0000 0.0000 0.0000 0.0000 0.0002 0.0000 nd nd nd nd nd nd nd tot 3.0126 2.9918 3.0101 2.9959 3.0094 3.0043 3.0143 3.0070 3.0077 3.0136 3.0095 3.0098 3.0123 3.0106 3.0141 Fo 0.7680 0.7127 0.7464 0.6783 0.7597 0.6178 0.7629 0.6433 0.7736 0.6141 0.7640 0.6318 0.7665 0.7459 0.7681 Fa 0.2320 0.2873 0.2536 0.3217 0.2403 0.3822 0.2371 0.3567 0.2264 0.3859 0.2360 0.3682 0.2335 0.2541 0.2319 ol 8 15-May-85 Makushin olivine compositions WB-05 m22 rim 4 wt% oxides Si02 37.13 Ti02 nd AL203 nd Feo 29.02 Mno 0.61 MgO = 32.17 Cad 0.23 NiO nd Cr203 nd tot 99.16 atoms per 4 oxygens Si 1.0087 Ti nd Al nd Fe2+ 0.6593 Mn 0.0140 Mg = 1.3025 Ca 0.0067 Ni nd Cr nd tot 2.9913 Fo 0.6639 Fa 0.3361 Makushin clinopyroxene analyses LR-02 LR-02 83mn65 = 83mné5 core core 2012 2013 wt% oxides sio2 52.10 51.54 Ti02 0.36 0.56 A203 2.59 1.86 FeO 7.36 11.85 Mno 0.22 0.46 MgO 17.37 14.75 CaO 20.26 18.40 Na20 nd nd NiO 0.00 0.00 cr203 0.00 0.00 tot 100.26 99.42 atoms per 6 oxygens Si 1.9147 1.9423 Ti 0.0100 0.0159 Alt 0.0853 0.0577 Alo 0.0270 0.0250 Fe3+ 0.0384 0.0009 Fe2+ 0.1878 0.3726 Mn 0.0068 0.0147 Mg 0.9514 0.8284 Ca 0.7978 0.7430 Na nd nd Ni 0.0000 0.0000 Cr 0.0000 0.0000 tot 4.0192 4.0005 Ac 0.0000 0.0000 Jd 0.0000 0.0000 FeCaTs 0.0384 0.0009 CrCaTs 0.0000 0.0000 AlCaTs 0.0270 0.0250 Wo 0.3662 0.3585 En 0.5293 0.4425 Fs 0.1045 0.1990 mg# 83.5 69.0 LR-02 83mné5 (core 2014 51.23 0.60 1.97 11.73 0.47 13.96 19.26 nd 0.01 0.03 99.26 1.9388 0.0171 0.0612 0.0267 0.0000 0.3713 0.0151 0.7874 0.7810 nd 0.0003 0.0009 3.9997 0.0000 0.0000 0.0000 0.0009 0.0267 0.3767 0.4236 0.1997 68.0 LR-02 83mn65 rim) 2015 50.48 0.64 2.42 10.82 0.39 15.73 17.62 0.02 0.00 98.12 1.9179 0.0183 0.0821 0.0263 0.0192 0.3246 0.0126 0.8907 0.7173 0.0006 0.0000 4.0096 0.0000 0.0000 0.0192 0.0000 0.0263 0.3359 0.4867 0.1774 73.3 LR-02 83mné5 core 2016 51.56 0.51 1.64 11.26 0.46 14.66 18.85 0.00 0.00 98.94 1.9501 0.0145 0.0499 0.0232 0.0000 0.3562 0.0147 0.8263 0.7639 0.0000 0.0000 3.9989 0.0000 0.0000 0.0000 0.0000 0.0232 0.3704 0.4400 0.1896 69.9 LR-02 83mn65 rim 2017 51.16 0.57 2.04 10.79 0.38 15.03 19.38 0.00 0.00 99.35 1.9270 0.0161 0.0730 0.0176 0.0232 0.3167, 0.0121 0.8437 0.7822 0.0000 0.0000 4.0116 0.0000 0.0000 0.0232 0.0000 0.0176 0.3707 0.4575 0.1718 72.7 LR-02 83mn65 core 2020 51.58 0.56 1.71 11.46 0.40 15.06 18.35 0.01 0.02 99.15 1.9453 0.0159 0.0547 0.0214 0.0009 0.3606 0.0128 0.8465 0.7416 0.0003 0.0006 4.0005 0.0000 0.0000 0.0009 0.0006 0.0214 0.3593 0.4493 0.1914 70.1 cpx 1 LR-02 83mn65 (core 2021 50.83 0.47 1.81 11.53 0.46 14.57 18.38 0.01 0.00 98.06 1.9423 0.0135 0.0577 0.0239 0.0068 0.3617 0.0149 0.8297 0.7526 0.0003 0.0000 4.0034 0.0000 0.0000 0.0068 0.0000 0.0239 0.3610 0.4450 0.1940 69.6 LR-02 83mn65 rim) 2022 51.17 0.61 1.84 11.01 0.44 14.93 18.48 0.03 0.03 98.54 1.9407 0.0174 0.0593 0.0229 0.0007 0.3485 0.0141 0.8439 0.7510 0.0009 0.0009 4.0004 0.0000 0.0000 0.0007 0.0009 0.0229 0.3632 0.4507 0.1861 70.8 LR-02 83mn65 rim) 2024 51.02 0.60 1.86 11.38 0.37 15.07 18.42 0.01 0.00 98.73 1.9342 0.0171 0.0658 0.0173 0.0143 0.3466 0.0119 0.8514 0.7482 0.0003 0.0000 4.0071 0.0000 0.0000 0.0143 0.0000 0.0173 0.3583 0.4560 0.1856 71.1 LR-06a 83mn52 (core 2084 51.68 0.59 1.63 11.91 0.48 14.45 18.27 nd 0.05 0.00 99.06 1.9545 0.0168 0.0455 0.0272 0.0000 0.3767 0.0154 0.8144 0.7404 nd -0015 -0000 +9924 woo -0000 -0000 -0000 -0000 -0272 ooooo -3566 -4399 -2035 68.4 ooo LR-06a 83mn52 rim) 2085 51.38 0.61 1.95 11.02 0.45 14.94 18.71 nd 0.02 0.01 99.09 1.9381 0.0173 0.0619 0.0248 0.0022 0.3454 0.0144 0.8399 0.7562 nd 0.0006 0.0003 4.0011 0.0000 0.0000 0.0022 0.0003 0.0248 0.3645 0.4503 0.1852 70.9 LR-06a 83mn52 (core 2086 50.98 0.55 1.74 13.11 0.49 14.28 17.67 0.00 0.03 98.85 1.9422 0.0158 0.0578 0.0203 0.0051 0.4126 0.0158 0.8108 0.7213 0.0000 0.0009 4.0026 0.0000 0.0000 0.0051 0.0009 0.0203 0.3475 0.4324 0.2201 66.3 LR-06a 83mn52 rim) 2087 51.73 0.58 1.43 14.22 0.53 13.32 17.34 0.00 0.04 99.19 1.9684 0.0166 0.0316 0.0326 0.0000 0.4525 0.0171 0.7554 0.7070 -0000 -0012 +9823 woo -0000 -0000 -0000 -0012 ~0326 ooooceo -3366 -4149 +2485 62.5 ooo 15-May-85 Makushin clinopyroxene analyses LR-06a 83mn52 (core 2088 wt% oxides sio2 51.29 Tio2 0.56 Al203 2.20 Feo 9.73 MnO 0.32 MgO 14.90 Cao 19.68 Na20 nd NiO 0.00 cr203 0.02 tot 98.7 atoms per 6 oxygens Si 1.9350 Ti 0.0159 Alt 0.0650 Alo 0.0329 Fe3+ 0.0000 Fe2+ 0.3070 Mn 0.0102 Mg 0.8378 Ca 0.7956 Na nd Ni 0.0000 Cr 0.0006 tot 3.9999 Ac 0.0000 Jd 0.0000 FeCaTs 0.0000 CrCaTs 0.0006 AlCaTs 0.0329 Wo 0.3810 En 0.4530 Fs 0.1660 mg# 73.2 LR-06a 83mn52 rim) 2089 51.03 0.59 2.33 10.14 0.36 15.25 19.20 nd 0.01 0.01 98.92 1.9236 0.0167 0.0764 0.0271 0.0156 0.3041 0.0115 0.8567 0.7755 nd 0.0003 0.0003 4.0078 0.0000 0.0000 0.0156 0.0003 0.0271 0.3663 0.4677 0.1660 73.8 LR-06a 83mn52 (core 2090 51.50 0.57 1.65 12.67 0.53 13.92 18.06 nd 0.00 0.02 98.92 1.9564 0.0163 0.0436 0.0303 0.0000 0.4025 0.0171 0.7881 0.7351 nd 0.0000 0.0006 3.9900 0.0000 0.0000 0.0000 0.0006 0.0303 0.3521 0.4288 0.2190 66.2 LR-06a 83mn52 rim) 2092 52.06 0.46 1.82 9.34 0.34 16.69 18.66 0.00 0.01 99.38 1.9400 0.0129 0.0600 0.0200 0.0139 0.2771 0.0107 0.9269 0.7451 0.0000 0.0003 4.0070 0.0000 0.0000 0.0139 0.0003 0.0200 0.3554 0.4962 0.1484 77.0 LR-06a 83mn52 2093 51.08 0.76 2.22 12.99 0.51 15.38 16.36 0.00 0.00 99.3 1.9278 0.0216 0.0722 0.0266 0.0024 0.4076, 0.0163 0.8651 0.6616 0.0000 0.0000 4.0012 0.0000 0.0000 0.0024 0.0000 0.0266 0.3163 0.4647 0.2190 68.0 LR-06a 83mn52 (core 2094 52.02 0.48 1.29 13.91 0.54 13.60 17.58 0.00 0.01 99.43 1.9723 0.0137 0.0277 0.0300 0.0000 0.4411 0.0173 0.7685 0.7142 0.0000 0.0003 3.9850 0.0000 0.0000 0.0000 0.0003 0.0300 0.3420 0.4181 0.2400 63.5 cpx 2 LR-06a 83mn52 rim 2095 51.86 0.52 1.48 13.56 0.56 13.51 17.69 0.02 0.00 99.2 1.9689 0.0148 0.0311 0.0351 0.0000 0.4305 0.0180 0.7644 0.7196 0.0006 0.0000 3.9832 0.0000 0.0000 0.0000 0.0000 0.0351 0.3423 0.4208 0.2370 64.0 1.9109 0.0197 0.0891 0.0476 0.0021 0.3316 0.0105 0.8337 0.7553 0.0006 0.0000 4.0011 0.0000 0.0000 0.0021 0.0000 0.0476 0.3528 0.4631 0.1841 71.5 LR-06f 83mn57 on opx 2098.5 52.24 0.56 1.52 13.48 0.53 16.00 15.09 0.00 0.02 99.44 1.9618 0.0158 0.0382 0.0291 0.0000 0.4234 0.0169 0.8955 0.6072 0.0000 0.0006 3.9884 0.0000 0.0000 0.0000 0.0006 0.0291 0.2888 0.4829 0.2283 67.9 LR-06f 83mn57 (core 2099 51.86 0.54 1.55 12.72 0.51 13.98 18.27 0.02 0.01 99.46 1.9597 0.0153 0.0403 0.0287 0.0000 0.4020 0.0163 0.7873 0.7397 0.0006 0.0003 3.9903 0.0000 0.0000 0.0000 0.0003 0.0287 0.3554 0.4267 0.2179 66.2 LR-06f 83mn57 rim) 2100 51.27 0.58 1.92 11.15 0.41 15.26 18.21 0.02 0.00 98.82 1.9378 0.0165 0.0622 0.0233 0.0060 0.3465 0.0131 0.8596 0.7375 0.0006 0.0000 4.0030 0.0000 0.0000 0.0060 0.0000 0.0233 0.3541 0.4603 0.1856 71.3 LR-11 mig (core 48.99 0.63 2.22 11.30 0.37 15.05 18.23 0.39 97.18 1.8923 0.0183 0.1077 0.0000 0.0711 0.2939 0.0121 0.8664 0.7545 0.0292 4.0455 0.0292 0.0000 0.0419 0.0000 0.0000 0.3563 0.4806 0.1631 74.7 15-May-85 Makushin clinopyroxene analyses LR-11 m9 rim) 5 wt% oxides sio2 49.16 Tio2 0.57 Al203 2.02 Fed 11.34 MnO 0.34 MgO 15.46 Cao 18.41 Na20 0.28 NiO nd Cr203 nd tot 97.58 atoms per 6 oxygens Si 1.8928 Ti 0.0165 Alt 0.1072 Alo 0.0000 Fe3+ 0.0742 Fe2+ 0.2910 Mn 0.0111 Mg 0.8871 Ca 0.7595 Na 0.0209 Ni nd Cr nd tot 4.0603 Ac 0.0209 Jd 0.0000 FeCaTs 0.0533 CrCaTs 0.0000 AlCaTs 0.0000 Wo 0.3531 En 0.4871 Fs 0.1598 mg# 75.3 LR-11 mig (core LR-11 mig rim) 22 49.32 0.53 1.67 13.31 0.51 14.38 18.50 0.24 nd nd 98.46 1.9009 0.0154 0.0991 0.0000 0.0684 0.3607 0.0167 0.8260 0.7640 0.0179 nd nd 4.0690 0.0179 0.0000 0.0504 0.0000 0.0000 0.3568 0.4477 0.1955 69.6 LR-11 mia gm 13 48.60 0.62 3.46 12.35 0.37 12.34 15.67 0.83 nd nd 94.24 1.9224 0.0184 0.0776 0.0838 0.0000 0.4086 0.0124 0.7275 0.6642 0.0637 nd nd 3.9785 0.0000 0.0637 0.0000 0.0000 0.0201 0.3220 0.4341 0.2438 64.0 LR-11 mig gm 4 41.50 0.48 2.27 6.61 0.16 14.70 12.84 0.31 nd nd 78.87 1.9203 0.0167 0.0797 0.0441 0.0021 0.2537 0.0063 1.0137 0.6366 0.0278 nd nd 4.0011 0.0021 0.0257 0.0000 0.0000 0.0185 0.3091 0.5526 0.1383 80.0 LR-11 mig 18 44.57 0.47 1.50 9.29 0.35 13.67 15.05 0.27 85.17 1.9436 0.0154 * 0.0564 0.0207 0.0048 0.3340 0.0129 0.8884 0.7032 0.0228 4.0024 0.0048 0.0180 0.0000 0.0000 0.0027 0.3503 0.4722 0.1775 72.7 LR-11 m9 19 43.05 0.40 1.48 8.64 0.37 12.79 14.91 0.41 . 82.05 1.9466 0.0136 0.0534 0.0255 0.0006 0.3261 0.0142 0.8619 0.7224 0.0359 4.0003 0.0006 0.0255 0.0000 0.0000 0.0000 0.3612 0.4634 0.1753 72.6 cpx 3 LR-11 mig 28 49.36 0.57 1.41 13.72 0.54 14.90 16.87 0.26 97.63 1.9133 0.0166 0.0867 0.0000 0.0535 0.3913 0.0177 0.8608 0.7007 0.0195 4.0601 0.0195 0.0000 0.0339 0.0000 0.0000 0.3334 0.4583 0.2083 68.7 LR-11 mig 30 48.94 0.56 1.24 14.37 0.62 14.10 16.96 0.32 97.11 1.9159 0.0165 0.0841 0.0000 0.0511 0.4193 0.0206 0.8226 0.7114 0.0243 4.0659 0.0243 0.0000 0.0268 0.0000 0.0000 0.3423 0.4356 0.2221 66.2 LR-12b DI-409 (core 2056 51.68 0.57 1.35 13.33 0.58 13.72 17.59 nd 0.01 0.00 98.83 1.9682 0.0163 0.0318 0.0288 0.0000 0.4246 0.0187 0.7787 0.7178 nd 0.0003 0.0000 3.9852 0.0000 0.0000 0.0000 0.0000 0.0288 0.3445 0.4242 0.2313 64.7 LR-12b DI-409 rim) 2057 51.85 0.54 1.39 13.58 0.58 13.75 17.66 nd 0.02 0.02 99.39 1.9656 0.0154 0.0344 0.0277 0.0000 0.4305 0.0186 0.7768 0.7173 nd 0.0006 0.0006 3.9877 0.0000 0.0000 0.0000 0.0006 0.0277 0.3445 0.4217 0.2337 64.3 1.9594 0.0147 0.0406 0.0274 0.0000 0.3986 0.0172 0.7879 0.7451 0.0009 0.0000 3.9919 0.0000 0.0000 0.0000 0.0000 0.0274 0.3588 0.4257 0.2154 66.4 LR-12b DI-409 2060 51.78 0.51 1.25 13.52 0.61 13.92 17.98 0.01 0.01 99.59 1.9615 0.0145 0.0385 0.0173 0.0000 0.4283 0.0196 0.7858 0.7298 0.0003 0.0003 3.9960 0.0000 0.0000 0.0000 0.0003 0.0173 0.3561 0.4167 0.2271 64.7 LR-12b DI-409 (core 2061 51.50 0.59 1.79 12.94 0.48 13.60 18.45 0.00 0.02 99.37 1.9515 0.0168 0.0485 0.0314 0.0000 0.4101 0.0154 0.7680 0.7491 0.0000 0.0006 3.9914 0.0000 0.0000 0.0000 0.0006 0.0314 0.3585 0.4182 0.2233 65.2 15-May-85 Makushin clinopyroxene analyses LR-12b DI-409 rim) 2062 wt% oxides sio2 52.17 Ti02 0.53 Al203 1.59 FeO 12.37 Mnd 0.47 MgO 14.44 Cao 17.95 Na20 nd NiO 0.00 cr203 0.00 tot 99.52 atoms per 6 oxygens Si 1.9632 Ti 0.0150 Alt 0.0368 Alo 0.0337 Fe3+ 0.0000 Fe2+ 0.3893 Mn 0.0150 Mg 0.8098 Ca 0.7238 Na nd Ni 0.0000 Cr 0.0000 tot 3.9866 Ac 0.0000 Jd 0.0000 FeCaTs 0.0000 CrCaTs 0.0000 AlCaTs 0.0337 Wo 0.3450 En 0.4423 Fs 0.2126 mg# 67.5 LR-12n D1-931 (core 2063 51.30 0.61 2.19 10.45 0.43 14.27 19.34 nd 0.00 0.00 98.59 1.9422 0.0174 0.0578 0.0399 0.0000 0.3309 0.0138 0.8051 0.7845 nd 0.0000 0.0000 3.9916 0.0000 0.0000 0.0000 0.0000 0.0399 0.3723 0.4449 0.1828 70.9 LR-12n DI-931 rim) 2064 51.26 0.53 1.41 13.44 0.57 13.11 17.96 nd 0.00 0.03 98.31 1.9671 0.0153 0.0329 0.0309 0.0000 0.4313 0.0185 0.7498 0.7385 nd 0.0000 0.0009 3.9852 0.0000 0.0000 0.0000 0.0009 0.0309 0.3533 0.4105 0.2362 63.5 LR-12n DI-931 core 2066 51.61 0.60 1.81 12.20 0.48 14.03 18.76 nd 0.00 0.01 99.5 1.9481 0.0170 0.0519 0.0286 0.0000 0.3851 0.0153 0.7893 0.7588 nd 0.0000 0.0003 3.9945 0.0000 0.0000 0.0000 0.0003 0.0286 0.3649 0.4268 0.2083 67.2 LR-12n DI-931 rim 2067 51.36 0.54 1.28 13.87 0.57 14.01 17.46 nd 0.01 0.00 99.1 1.9569 0.0155 0.0431 0.0144 0.0000 0.4420 0.0184 0.7955 0.7128 nd 0.0003 0.0000 3.9989 0.0000 0.0000 0.0000 0.0000 0.0144 0.3492 0.4184 0.2324 64.3 M1-01 83mn41 core 2025 51.04 0.52 1.53 12.15 0.55 14.24 18.72 nd 0.00 0.06 98.81 1.9438 0.0149 0.0562 0.0125 0.0121 0.3749, 0.0177 0.8082 0.7639 nd 0.0000 0.0018 4.0061 0.0000 0.0000 0.0121 0.0018 0.0125 0.3687 0.4312 0.2000 68.3 M1-01 83mn41 (core 2026 51.18 0.60 2.36 9.28 0.33 15.34 19.31 0.01 0.00 98.41 1.9309 0.0170 0.0691 0.0358 0.0000 0.2928 0.0105 0.8625 0.7806 0.0003 0.0000 3.9996 0.0000 0.0000 0.0000 0.0000 0.0358 0.3724 0.4686 0.1591 74.7 cpx 4 M1-01 83mn41 rim) 2027 49.57 0.90 2.48 13.59 0.60 15.40 15.60 0.00 0.03 98.17 1.9010 0.0260 0.0990 0.0131 0.0331 0.4028 0.0195 0.8802 0.6410 0.0000 0.0009 4.0165 0.0000 0.0000 0.0331 0.0009 0.0131 0.2970 0.4823 0.2207 68.6 M1-01 83mn41 (core 2028 51.53 0.51 1.37 11.54 0.51 14.20 19.15 nd 0.00 0.00 98.81 1.9567 0.0146 0.0433 0.0180 0.0000 0.3665 0.0164 0.8036 0.7791 0.0000 0.0000 3.9981 0.0000 0.0000 0.0000 0.0000 0.0180 0.3806 0.4254 0.1940 68.7 8 SoSSSCoD WOOD COO eCC COCO coo M1-01 3mn41 rim) 2029 51.47 0.57 1.67 11.33 0.48 14.16 18.98 nd 0.00 0.00 98.66 -9537 -0163 -0463 +0284 -0000 -3597 ~0154 -8010 -7719 -0000 -0000 -9927 -0000 -0000 -0000 -0000 0284 -3718 -4336 0.1947 69.0 M1-01 83mn41 core 2030 51.40 0.52 1.45 11.36 0.44 14.32 19.31 0.03 0.00 98.83 1.9510 0.0148 0.0490 0.0158 0.0035 0.3571 0.0141 0.8100 0.7853 0.0009 0.0000 4.0018 0.0000 0.0000 0.0035 0.0000 0.0158 0.3830 0.4282 0.1888 69.4 M1-01 83mn41 eooooocoo= ©cCoooo Woo ° (core 2031 51.48 0.54 1.47 11.45 0.56 14.29 18.83 nd 0.00 0.01 98.63 -9561 -0154 -0439 -0219 -0000 -3639 -0180 -8092 - 7666 -0000 -0003 9954 -0000 -0000 -0000 -0003 -0219 -3722 0.4331 ° = 1947 69.0 1-01 83mn41 rim) 2032 51.00 0.51 1.78 11.48 0.44 14.36 19.20 0.03 0.03 98.83 1.9377 0.0146 0.0623 0.0174 0.0149 0.3499 0.0142 0.8131 0.7816 0.0009 0.0009 4.0075 0.0000 0.0000 0.0149 0.0009 0.0174 0.3742 0.4375 0.1883 69.9 M1-01 83mn41 core 2033 51.58 0.53 1.62 10.10 0.38 15.00 19.47 0.00 0.00 98.68 1 SeSCOOoD FOOD COC OC COCO ooo +9488 -0151 +0512 -0209 -0002 -3190 -0122 +8446 - 7882 -0000 -0000 -0001 -0000 -0000 -0002 -0000 -0209 -3835 -4475 = 1690 72.6 M1-01 83mn41 rim 2034 50.70 0.63 2.63 8.77 0.23 15.34 20.67 nd 0.00 0.01 98.98 -9066 -0178 -0934 -0232 0342 +2416 -0073 -8597 ~8329 ecocooeooCc Oo -0000 -0003 -0171 FOO -0000 -0000 +0342 -0003 -0232 ocoooo 0.3876 -4781 = 1343 78.1 oo 15-May-85 Makushin clinopyroxene analyses M1-01 83mn41 (core 2035 wt% oxides sio2 50.85 Ti02 0.61 Al203 2.49 Fed 9.03 MnO 0.32 MgO 14.74 Cao 20.37 Na20 nd NiO 0.00 Cr203 0.00 tot 98.41 atoms per 6 oxygens Si 1.9232 Ti 0.0174 Alt 0.0768 Alo 0.0343 Fe3+ 0.0078 Fe2+ 0.2779 Mn 0.0103 Mg 0.8309 Ca 0.8255 Na nd Ni 0.0000 Cr 0.0000 tot 4.0039 Ac 0.0000 Jd 0.0000 FeCaTs 0.0078 CrCaTs 0.0000 AlCaTs 0.0343 Wo 0.3917 En 0.4558 Fs 0.1524 mg# 74.9 M1-01 83mn41 rim) 2036 50.44 0.63 2.78 8.74 0.31 14.97 20.67 nd 0.00 0.01 98.55 1.9060 0.0179 0.0940 0.0298 0.0281 0.2481 0.0099 0.8430 0.8369 nd 0.0000 0.0003 4.0141 0.0000 0.0000 0.0281 0.0003 0.0298 0.3893 0.4718 0.1388 77.3 M1-5ic m3c (core 9 50.91 0.57 2.18 12.57 0.70 14.33 18.20 0.28 nd nd 99.74 1.9207 0.0162 0.0793 0.0176 0.0294 0.3672 0.0224 0.8057 0.7357 0.0205 nd nd 4.0147 0.0205 0.0000 0.0089 0.0000 0.0176 0.3546 0.4433 0.2021 68.7 M1-51¢ m3c rim) 10 51.47 0.48 1.31 11.91 0.63 14.37 19.40 0.30 nd nd 99.87 1.9391 0.0136 0.0609 0.0000 0.0337 0.3416 0.0201 0.8068 0.7832 0.0219 nd nd 4.0209 0.0219 0.0000 0.0118 0.0000 0.0000 0.3857 0.4316 0.1827 70.3 M1-S1c m43c (core 13 51.47 0.48 1.59 12.20 0.65 14.21 19.34 0.31 nd nd 100.25 1.9334 0.0136 0.0666 0.0038 0.0357 0.3476 0.0207 0.7955 0.7784 0.0226 nd nd 4.0178 0.0226 0.0000 0.0131 0.0000 0.0038 0.3808 0.4309 0.1883 69.6 M1-51c m43c rim) 14 51.32 0.47 1.32 12.61 0.75 14.21 18.98 0.21 nd nd 99.87 1.9392 0.0134 0.0608 0.0000 0.0341 0.3645 0.0240 0.8002 0.7685 0.0154 nd nd 4.0200 0.0154 0.0000 0.0187 0.0000 0.0000 0.3749 0.4295 0.1956 68.7 M1-51¢ m43c core 15 51.56 0.51 1.73 12.78 0.82 14.16 18.79 0.29 nd 100.64 1.9320 0.0144 0.0680 0.0084 0.0309 0.3696 0.0260 0.7907 0.7544 0.0211 4.0155 0.0211 0.0000 0.0099 0.0000 0.0084 0.3681 0.4306 0.2013 68.1 cpx 5 M1-51c m3c core 16 51.54 0.63 1.78 11.90 0.61 14.29 19.30 0.25 nd 100.3 1.9315 0.0178 0.0685 0.0101 0.0229 0.3501 0.0194 0.7981 0.7750 0.0182 4.0115 0.0182 0.0000 0.0047 0.0000 0.0101 0.3801 0.4309 0.1890 69.5 M1-51c m43c core 17 51.20 0.52 1.50 12.80 0.66 14.09 18.76 0.32 99.85 1.9343 0.0148 0.0657 0.0011 0.0351 0.3693 0.0211 0.7933 0.7594 0.0234 4.0175 0.0234 0.0000 0.0117 0.0000 0.0011 0.3733 0.4276 0.1991 68.2 M1-51d m43f (core 51.31 0.55 1.61 11.65 0.48 14.85 19.94 100.39 1.9248 0.0155 0.0752 0.0000 0.0441 0.3214 0.0153 0.8302 0.8015 4.0280 0.0000 0.0000 0.0441 0.0000 0.0000 0.3787 0.4479 0.1734 72.1 M1-51d wu DRotaoS == BARR SESEERSS 8 1.9291 0.0171 0.0709 0.0070 0.0295 0.3386 0.0132 0.8195 0.7898 4.0148 0.0000 0.0000 0.0295 0.0000 0.0070 0.3766 0.4411 0.1822 70.8 M1-51d a SR a7 WW Nom wu SMNCoONCe co un RAAF E FN no 8 1.9007 0.0205 0.0993 0.0206 0.0376 0.2293 0.0108 0.8657 0.8343 4.0188 0.0000 0.0000 0.0376 0.0000 0.0206 0.3880 0.4838 0.1282 79.1 M1-51d m3 rim) 50.33 0.65 3.62 8.13 0.22 15.35 21.57 99.87 1.8755 0.0182 0.1245 0.0345 0.0536 0.1998 0.0069 0.8525 0.8613 4.0268 0.0000 0.0000 0.0536 0.0000 0.0345 0.3866 0.4969 0.1165 81.0 M1-51d m43f (core 51.94 0.29 1.15 11.43 0.54 14.89 19.18 nd 99.42 1.9587 0.0082 0.0413 0.0098 0.0151 0.3454 0.0172 0.8368 0.7750 4.0076 0.0000 0.0000 0.0151 0.0000 0.0098 0.3751 0.4424 0.1826 70.8 M1-51d m43f rim 10 51.63 0.63 2.49 9.46 0.33 15.73 19.99 100.26 1.9162 0.0176 0.0838 0.0251 0.0235 0.2701 0.0104 0.8701 0.7950 nd nd nd 4.0117 0.0000 0.0000 0.0235 0.0000 0.0251 0.3732 0.4783 0.1485 76.3 15-May-85 Makushin clinopyroxene analyses M1-51d m3 rim) 1 wt% oxides sio2 50.80 Ti02 0.62 AL203 2.24 FeO 9.52 Mno 0.31 MgO 15.52 Cao 20.00 Na20 nd NiO nd cr203 nd tot 99.01 atoms per 6 oxygens Si 1.9136 Ti 0.0176 Alt 0.0864 Alo 0.0131 Fe3+ 0.0381 Fe2+ 0.2618 Mn 0.0099 Mg 0.8713 Ca 0.8073 Na nd Ni nd Cr nd tot 4.0191 Ac 0.0000 dd 0.0000 FeCaTs 0.0381 CrCaTs 0.0000 AlCaTs 0.0131 Wo 0.3780 En 0.4783 Fs 0.1437 mg# 76.9 Mc- 18 m30 (core 10 50.93 0.30 4.40 5.36 0.10 16.65 20.99 0.30 nd nd 99.03 1.8800 0.0083 0.1200 0.0714 0.0319 0.1335 0.0031 0.9159 0.8302 0.0215 nd nd 4.0160 0.0215 0.0000 0.0105 0.0000 0.0714 0.3741 0.5462 0.0796 87.3 Mc-18 m30 rim) 1 49.02 0.63 4.62 8.04 0.18 15.10 20.60 0.37 nd nd 98.56 1.8460 0.0178 0.1540 0.0511 0.0672 0.1860 0.0057 0.8475 0.8312 0.0270 nd nd 4.0336 0.0270 0.0000 0.0402 0.0000 0.0511 0.3700 0.5166 0.1134 82.0 Mc-18 30 (core 12 49.04 0.63 5.00 8.02 0.22 14.63 20.57 0.43 nd nd 98.54 1.8454 0.0178 0.1546 0.0673 0.0516 0.2008 0.0070 0.8205 0.8294 0.0314 nd nd 4.0258 0.0314 0.0000 0.0203 0.0000 0.0673 0.3710 0.5054 0.1237 80.3 Mc-18 m30 rim) 13 48.91 0.62 4.56 7.76 0.23 14.94 20.91 0.37 nd nd 98.3 1.8469 0.0176 0.1531 0.0500 0.0679 0.1772 0.0074 0.8408 0.8461 0.0271 4.0339 0.0271 0.0000 0.0408 0.0000 0.0500 0.3777 0.5140 0.1083 82.6 Mc-18 m30 (core 16 50.42 0.29 4.87 5.10 0.14 16.55 21.40 0.40 99.17 1.8600 0.0080 0.1400 0.0718 0.0521 0.1053, 0.0044 0.9099 0.8459 0.0286 4.0260 0.0286 0.0000 0.0234 0.0000 0.0718 0.3753 0.5599 0.0648 89.6 Mc-18 30 rim) 17 51.04 0.69 2.21 8.97 0.35 16.34 19.67 0.39 nd nd 99.66 1.9020 0.0193 0.0980 0.0000 0.0593 0.2202 0.0110 0.9075 0.7854 0.0282 nd nd 4.0310 0.0282 0.0000 0.0311 0.0000 0.0000 0.3771 0.5012 0.1216 80.5 cpx 6 Mc-18 m30 gm 15 49.77 0.75 3.24 9.30 0.24 15.63 19.25 0.33 nd nd 98.51 1.8788 0.0213 0.1212 0.0230 0.0555 0.2381 0.0077 0.8793 0.7787 0.0242 nd nd 4.0278 0.0242 0.0000 0.0314 0.0000 0.0230 0.3621 0.5020 0.1359 78.7 Mc-18 m30 gm 20 50.51 0.63 2.34 9.30 0.31 16.07 19.16 0.34 nd nd 98.66 1.9026 0.0178 0.0974 0.0065 0.0551 0.2378 0.0099 0.9021 0.7733 0.0248 nd nd 4.0276 0.0248 0.0000 0.0303 0.0000 0.0065 0.3682 0.4999 0.1318 79.1 Md-04 m04 (core 50.90 0.69 2.14 11.70 0.38 14.75 18.78 99.34 1.9228 0.0196 0.0772 0.0181 0.0200 0.3497 0.0122 0.8304 0.7601 4.0100 0.0000 0.0000 0.0200 0.0000 0.0181 0.3611 0.4496 0.1893 70.4 Md-04 m04 rim) 51.28 0.65 1.88 “11.66 0.43 15.06 18.62 99.58 1.9306 0.0184 0.0694 0.0140 0.0186 0.3485 0.0137 0.8450 0.7511 4.0093 0.0000 0.0000 0.0186 0.0000 0.0140 0.3592 0.4537 0.1871 70.8 Md- 04 m04 core 50.45 0.69 2.17 11.62 0.38 15.05 18.72 99.08 1.9122 0.0197 0.0878 0.0091 0.0394 0.3289 0.0122 0.8501 0.7603 4.0197 0.0000 0.0000 0.0394 0.0000 0.0091 0.3559 0.4644 0.1797 72.1 z a6 aS © us ~— yw NUON-0O Yeezaeeneny 8 1.9204 0.0213 0.0796 0.0065 0.0304 0.3731 0.0112 0.8651 0.7075 4.0152 0.0000 0.0000 0.0304 0.0000 0.0065 0.3353 0.4644 0.2003 69.9 Md-04 m04 rim an 48.75 0.69 5.01 6.32 0.09 14.93 22.59 0.25 98.63 1.8316 0.0195 0.1684 0.0535 0.0760 0.1226 0.0029 0.8360 0.9094 0.0182 4.0380 0.0182 0.0000 0.0578 0.0000 0.0535 0.3991 0.5241 0.0769 87.2 Md-04 m04 rim 13 50.83 0.76 1.98 11.59 0.37 15.38 17.77 0.29 nd nd 98.97 +9201 -0216 -0799 -0083 -0284 -3377 -0118 -8658 -7193 -0212 eSSDDDDOOO= n -0142 «0212 -0000 -0072 -0000 -0083 ecoooo 0.3519 0.4662 0.1819 71.9 15-May-85 Makushin clinopyroxene analyses Md-14 mi4 (core 10 wt% oxides sio2 52.38 Tio2 0.67 AL203 1.57 Fed 12.64 MnO 0.42 MgO 14.39 Cad 17.75 Na20 nd NiO nd Cr203 nd tot 99.82 atoms per 6 oxygens Si 1.9650 Ti 0.0189 Alt 0.0350 Alo 0.0345 Fe3+ 0.0000 Fe2+ 0.3966 Mn 0.0133 Mg 0.8045 Ca 0.7135 Na nd Ni nd cr nd tot 3.9813 Ac 0.0000 Jd 0.0000 FeCaTs 0.0000 CrCaTs 0.0000 AlCaTs 0.0345 Wo 0.3395 En 0.4424 Fs 0.2181 mg# 67.0 Md-14 m4 rim) 1 51.22 0.89 2.93 12.34 0.33 14.54 17.56 nd nd nd 99.81 1.9202 0.0251 0.0798 0.0497 0.0000 0.3869 0.0105 0.8124 0.7054 nd nd nd 3.9899 0.0000 0.0000 0.0000 0.0000 0.0497 0.3278 0.4553 0.2168 67.7 Md- 14 m4 (core 12 51.81 0.75 2.18 12.28 0.35 13.67 18.49 nd nd nd 99.53 1.9507 0.0212 0.0493 0.0475 0.0000 0.3867 0.0112 0.7671 0.7460 3.9796 0.0000 0.0000 0.0000 0.0000 0.0475 0.3492 0.4327 0.2181 66.5 Md-14 m4 rim) 13 50.51 0.73 2.39 12.57 0.46 14.62 17.80 nd 99.08 1.9168 0.0208 0.0832 0.0237 0.0178 0.3811 0.0148 0.8268 0.7238 4.0089 0.0000 0.0000 0.0178 0.0000 0.0237 0.3411 0.4510 0.2079 68.4 Md-14 m4 rim) 23 51.29 0.67 1.65 12.95 0.47 14.68 18.18 1.9344 0.0190 0.0656 0.0077 0.0199 0.3885 0.0150 0.8251 0.7347 4.0100 0.0000 0.0000 0.0199 0.0000 0.0077 0.3535 0.4395 0.2070 68.0 1.8742 0.0299 0.1258 0.0063 0.0597 0.3646 0.0133 0.8388 0.7173 4.0299 0.0000 0.0000 0.0597 0.0000 0.0063 0.3257 0.4700 0.2043 69.7 cpx 7 Md-14 1.9292 0.0185 0.0708 0.0090 0.0249 0.3875 0.0147 0.8199 0.7380 4.0124 0.0000 0.0000 0.0249 0.0000 0.0090 0.3521 0.4400 0.2079 67.9 Md-14 1.9337 0.0209 0.0663 0.0112 0.0133 0.4403 0.0158 0.8763 0.6288 4.0067 0.0000 0.0000 0.0133 0.0000 0.0112 0.3021 0.4645 0.2334 66.6 1 0 0 0 0 0 0 0 0 0 0 0 0 0 -8900 -0210 -1100 -0161 -0518 +2571 -0093 -8957 7748 -0259 -0000 -0000 -0518 -0000 -0161 -3535 -5023 = 1442 77.7 5 oo FRBSRRTESTE ° So 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 n= o-uoauco -0183 «1714 -0677 ~0670 = 1456 -0047 -8399 -8680 +0222 +0335 -0222 -0000 +0448 -0000 -0677 -3777 -5303 -0919 85.2 Me-03 m36 (core 49.93 0.56 4.53 6.74 0.14 15.55 22.48 0.27 100.2 1.8464 0.0156 0.1536 0.0439 0.0786 0.1298 0.0044 0.8570 0.8907 0.0194 4.0393 0.0194 0.0000 0.0593 0.0000 0.0439 0.3938 0.5265 0.0797 86.8 Me-03 m36 rim) 49.08 0.67 4.94 8.59 0.25 14.72 20.21 0.40 nd 98.86 1.8443 0.0189 0.1557 0.0632 0.0546 0.2153 0.0080 0.8244 0.8138 0.0291 ro -0273 -0291 -0000 +0255 -0000 -0632 -3626 +5054 +1320 79.3 ooo COCOCoO Me-03 m36 (core 12 50.24 0.51 3.43 7.10 0.19 15.67 21.46 0.34 98.94 1.8791 0.0143 0.1209 0.0303 0.0619 0.1602 0.0060 0.8735 0.8600 0.0247 4.0309 -0247 -0000 -0372 -0000 -0303 ocoooo +3962 +5102 -0936 84.5 ooo 15-May-85 Makushin clinopyroxene analyses Me-03 m36 rim) 13 wt% oxides sio2 49.43 Tio2 0.96 Al203 2.29 FeO 11.67 MnO 0.37 MgO 14.88 Cad 18.72 Na20 0.32 NiO nd cr203 nd tot 98.64 atoms per 6 oxygens Si 1.8857 Ti 0.0275 Alt 0.1143 Alo 0.0000 Fe3+ 0.0593 Fe2+ 0.3131 Mn 0.0120 Mg 0.8460 Ca 0.7652 Na 0.0237 Ni nd Cr nd tot 4.0467 Ac 0.0237 dd 0.0000 FeCaTs 0.0356 CrCaTs 0.0000 AlCaTs 0.0000 Wo 0.3648 En 0.4636 Fs 0.1716 mg# 73.0 Me-03 m36 gm 21 50.96 0.83 2.59 12.81 0.41 16.06 16.39 0.32 nd nd 100.37 1.9000 0.0233 0.1600 0.0138 0.0396 0.3598 0.0129 0.8924 0.6548 0.0231 nd nd 4.0198 0.0231 0.0000 0.0165 0.0000 0.0138 0.3122 0.4901 0.1976 71.3 1 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 Me-06 39 (core 12 50.74 0.55 1.68 10.46 0.47 14.56 19.32 0.35 nd nd 98.13 -9329 +0158 -0671 -0084 -0272 -3060 +0152 -8266 - 7886 -0259 nd nd -0136 -0259 -0000 +0014 -0000 = 0084 -3894 ~4456 = 1650 73.0 Me-06 m39 rim) 13 51.08 0.51 1.66 10.77 0.44 15.09 19.35 0.28 99.18 1.9274 0.0145 0.0726 0.0013 0.0423 0.2976 0.0141 0.8486 0.7824 0.0205 4.0212 0.0205 0.0000 0.0218 0.0000 0.0013 0.3796 0.4593 0.1611 74.0 Me-07 m40 (core 18 48.47 0.51 4.32 5.87 0.14 15.46 22.28 0.26 nd nd 97.31 1.8431 0.0146 0.1569 0.0367 0.0911 0.0956 0.0045 0.8761 0.9078 0.0192 4.0455 0.0192 0.0000 0.0719 0.0000 0.0367 0.3996 0.5413 0.0591 90.2 Me-07 moO rim) 19 49.89 0.37 3.05 5.67 0.18 16.17 22.47 0.26 98.06 1.8790 0.0105 0.1210 0.0145 0.0855 0.0931 0.0057 0.9076 0.9068 0.0190 4.0428 0.0190 0.0000 0.0665 0.0000 0.0145 0.4129 0.5325 0.0546 90.7 Me-07 m0 (core 20 48.28 0.76 4.58 7.08 0.14 15.02 21.87 0.27 nd nd 98 1.8313 0.0217 0.1687 0.0361 0.0893 0.1353 0.0045 0.8491 0.8889 0.0199 nd nd 4.0446 0.0199 0.0000 0.0694 0.0000 0.0361 0.3917 0.5247 0.0836 86.3 cpx 8 Me-07 m0 rim) 21 48.14 0.65 4.20 6.92 0.13 15.11 21.71 0.24 nd nd 97.1 1.8418 0.0187 0.1582 0.0312 0.0897 0.1318 0.0042 0.8615 0.8900 0.0178 nd nd 4.0448 0.0178 0.0000 0.0719 0.0000 0.0312 0.3935 0.5261 0.0805 86.7 Me-07 m0 (core 22 47.95 0.84 4.21 9.26 0.25 14.57 20.50 0.35 97.93 1.8334 0.0242 0.1666 0.0232 0.0952 0.2010 0.0081 0.8302 0.8399 0.0259 4.0476 0.0259 0.0000 0.0692 0.0000 0.0232 0.3738 0.5042 0.1220 80.5 Me-07 m0 rim) 23 47.95 0.84 4.21 9.26 0.25 14.57 20.50 0.35 nd nd 97.93 1.8334 0.0242 0.1666 0.0232 0.0952 0.2010 0.0081 0.8302 0.8399 0.0259 4.0476 0.0259 0.0000 0.0692 0.0000 0.0232 0.3738 0.5042 0.1220 80.5 Me-07 1.9115 0.0126 0.0885 0.0000 0.0633 0.2428 0.0091 0.9566 0.7340 0.0200 4.0383 0.0200 0.0000 0.0433 0.0000 0.0000 0.3453 0.5222 0.1325 79.8 Me-07 Me-07 m0 29 49.71 0.64 2.76 9.93 0.33 15.47 18.96 0.26 98.06 1.8910 0.0183 0.1090 0.0148 0.0575 0.2584 0.0106 0.8771 0.7728 0.0192 4.0288 0.0192 0.0000 0.0383 0.0000 0.0148 0.3598 0.4945 0.1457 77.2 Mf-01 m45 (core 51.04 0.40 1.25 11.47 0.49 14.33 20.28 0.33 99.59 1.9306 0.0114 0.0694 0.0000 0.0467 0.3162 0.0157 0.8078 0.8219 0.0242 4.0439 0.0242 0.0000 0.0225 0.0000 0.0000 0.3997 0.4314 0.1689 71.9 Mf-01 m5 rim) 2 47.71 1.13 5.29 8.76 0.21 14.33 20.79 0.28 nd nd 98.5 1.8100 0.0322 0.1900 0.0466 0.0789 0.1990 0.0067 0.8102 0.8451 0.0206 nd nd 4.0395 0.0206 0.0000 0.0583 0.0000 0.0466 0.3701 0.5057 0.1242 80.3 15-May-85 Makushin clinopyroxene analyses Mf-01 Mf-01 m5 m5 (core rim) 3 4 wt% oxides sio2 50.87 50.97 Ti02 0.61 0.67 Al203 3.30 2.40 FeO 6.12 8.66 MnO 0.13 0.36 MgO 16.00 15.22 Cad 22.73 20.74 Na20 0.33 0.36 NiO nd nd cr203 nd nd tot 100.09 99.38 atoms per 6 oxygens Si 1.8776 1.9073 Ti 0.0169 0.0189 Alt 0.1224 0.0927 Alo 0.0212 0.0132 Fe3+ 0.0674 0.0418 Fe2+ 0.1215 0.2292 Mn 0.0041 0.0114 Mg 0.8801 0.8488 Ca 0.8989 0.8316 Na 0.0236 0.0261 Ni nd nd cr nd nd tot 4.0337 4.0209 Ac 0.0236 0.0261 Jd 0.0000 0.0000 FeCaTs 0.0438 0.0157 CrCaTs 0.0000 0.0000 AlCaTs 0.0212 0.0132 Wo 0.4170 0.4013 En 0.5123 0.4714 Fs 0.0707 0.1273 mg# 87.9 78.7 Mf-01 m5 (core 11 46.28 0.92 6.13 7.39 0.19 13.93 22.29 0.18 nd nd 97.31 1.7786 0.0266 0.2214 0.0564 0.1118 0.1258 0.0062 0.7979 0.9179 0.0134 nd nd 4.0559 0.0134 0.0000 0.0984 0.0000 0.0564 0.3816 0.5342 0.0842 86.4 Mf-01 m5 rim) 12 47.38 0.83 5.70 8.03 0.20 14.03 21.94 0.31 nd nd 98.42 1.7993 0.0237 0.2007 0.0545 0.0987 0.1563 0.0064 0.7941 0.8928 0.0228 4.0494 0.0228 0.0000 0.0759 0.0000 0.0545 0.3812 0.5171 0.1018 83.6 Mf-01 m5 rim 50.96 0.38 2.15 8.11 0.21 16.71 19.51 0.20 98.23 1.9176 0.0108 0.0824 0.0130 0.0479 0.2073 0.0067 0.9371 0.7866 0.0146 4.0240 0.0146 0.0000 0.0333 0.0000 0.0130 0.3702 0.5158 0.1141 81.9 Mf-01 m5 gm 19 50.54 2.46 8.50 0.30 17.18 19.04 0.14 nd 98.76 1.8956 0.0169 0.1044 0.0044 0.0662 0.2004 0.0095 0.9603 0.7652 0.0102 4.0331 0.0102 0.0000 0.0560 0.0000 0.0044 0.3524 0.5358 0.1118 82.7 Mf-01 Mf-01 m5 m5 core core 5 1 50.50 51.04 0.52 0.40 2.80 1.25 7.33 11.47 0.21 0.49 16.97 14.33 20.51 20.28 0.26 0.33 nd nd nd nd 99.1 99.59 1.8842 1.9306 0.0146 0.0114 0.1158 0.0694 0.0073 0.0000 0.0793 0.0467 0.1494 0.3162 0.0066 0.0157 0.9436 0.8078 0.8200 0.8219 0.0188 0.0242 nd . nd nd nd 4.0397 4.0439 0.0188 0.0242 0.0000 0.0000 0.0605 0.0225 0.0000 0.0000 0.0073 0.0000 0.3761 0.3997 0.5387 0.4314 0.0853 0.1689 86.3 71.9 cpx 9 Mf-01 m5 rim 2 47.71 1.13 5.29 8.76 0.21 14.33 20.79 0.28 nd nd 98.5 1.8100 0.0322 0.1900 0.0466 0.0789 0.1990 0.0067 0.8102 0.8451 0.0206 nd nd 4.0395 0.0206 0.0000 0.0583 0.0000 0.0466 0.3701 0.5057 0.1242 80.3 Mf-01 m5 core 50.87 0.61 3.30 6.12 0.13 16.00 22.73 0.33 nd 100.09 1.8776 0.0169 0.1224 0.0212 0.0674 0.1215 0.0061 0.8801 0.8989 0.0236 4.0337 0.0236 0.0000 0.0438 0.0000 0.0212 0.4170 0.5123 0.0707 87.9 Mf-01 m5 rim 50.97 0.67 2.40 8.66 0.36 15.22 20.74 0.36 99.38 1.9073 0.0189 0.0927 0.0132 0.0418 0.2292 0.0114 0.8488 0.8316 0.0261 4.0209 0.0261 0.0000 0.0157 0.0000 0.0132 0.4013 0.4714 0.1273 78.7 Mf-01 m5 core 1 46.28 0.92 6.13 7.39 0.19 13.93 22.29 0.18 nd 97.31 1.7786 0.0266 0.2214 0.0564 0.1118 0.1258 0.0062 0.7979 0.9179 0.0134 4.0559 0.0134 0.0000 0.0984 0.0000 0.0564 0.3816 0.5342 0.0842 86.4 Mf-01 m5 rim 12 47.38 0.83 5.70 8.03 0.20 14.03 21.94 0.31 nd nd 98.42 1.7993 0.0237 0.2007 0.0545 0.0987 0.1563 0.0064 0.7941 0.8928 0.0228 4.0494 0.0228 0.0000 0.0759 0.0000 0.0545 0.3812 0.5171 0.1018 83.6 Mf-01 m5 rim 50.96 0.38 2.15 8.11 0.21 16.71 19.51 0.20 nd nd 98.23 1.9176 0.0108 0.0824 0.0130 0.0479 0.2073 0.0067 0.9371 0.7866 0.0146 4.0240 0.0146 0.0000 0.0333 0.0000 0.0130 0.3702 0.5158 0.1141 81.9 Mf-01 m5 gm 19 50.54 0.60 2.46 8.50 0.30 17.18 19.04 0.14 nd nd 98.76 1.8956 0.0169 0.1044 0.0044 0.0662 0.2004 0.0095 0.9603 0.7652 0.0102 nd nd 4.0331 0.0102 0.0000 0.0560 0.0000 0.0044 0.3524 0.5358 0.1118 82.7 15-May-85 Makushin clinopyroxene analyses Mf-01 Mf-04 m5 m8 core (core 5 6 wt% oxides sio2 50.50 50.16 Ti02 0.52 0.54 AL203 2.80 1.69 Fed 7.33 10.16 MnO 0.21 0.36 MgO 16.97 16.32 Cao 20.51 18.11 Na20 0.26 0.32 NiO nd nd cr203 nd nd tot 99.1 97.66 atoms per 6 oxygens Si 1.8842 1.9136 Ti 0.0146 0.0155 Alt 0.1158 0.0864 Alo 0.0073 0.0000 Fe3+ 0.0793 0.0554 Fe2+ 0.1494 0.2688 Mn 0.0066 0.0116 Mg 0.9436 0.9279 Ca 0.8200 0.7403 Na 0.0188 0.0237 Ni nd nd Cr nd nd tot 4.0397 4.0432 Ac 0.0188 0.0237 Jd 0.0000 0.0000 FeCaTs 0.0605 0.0317 CrCaTs 0.0000 0.0000 AlCaTs 0.0073 0.0000 Wo 0.3761 0.3543 En 0.5387 0.5007 Fs 0.0853 0.1450 mg# 86.3 77.5 Mf-04 m8 rim) z 49.46 0.69 2.64 9.73 0.38 15.23 19.20 0.42 nd nd 97.75 1.8881 0.0198 0.1119 0.0070 0.0653 0.2454 0.0123 0.8665 0.7854 0.0311 nd nd 4.0326 0.0311 0.0000 0.0342 0.0000 0.0070 0.3721 0.4893 0.1386 77.9 Mf-04 m8 (core 49.33 0.77 3.12 9.54 0.34 15.42 19.37 0.35 nd nd 98.24 * 1.8731 0.0220 0.1269 0.0128 0.0702 0.2328 0.0109 0.8726 0.7881 0.0258 4.0351 0.0258 0.0000 0.0444 0.0000 0.0128 0.3655 0.5009 0.1336 78.9 Mf-04 m8 rim) 49.82 0.89 1.94 12.87 0.61 15.19 16.59 0.34 98.25 1.9068 0.0256 0.0932 0.0000 0.0419 0.3700 0.0198 0.8665 0.6804 0.0252 4.0294 0.0252 0.0000 0.0167 0.0000 0.0000 0.3318 0.4682 0.2000 70.1 Mf-04 m8 (core 10 51.12 0.61 1.81 9.11 0.26 16.69 19.08 0.29 nd nd 98.97 1.9161 0.0172 0.0839 0.0000 0.0495 0.2360 0.0083 0.9323 0.7663 0.0211 nd nd 4.0307 0.0211 0.0000 0.0285 0.0000 0.0000 0.3689 0.5036 0.1275 79.8 Mf-04 m8 rim) 1 50.26 0.50 2.37 8.78 0.26 16.43 19.68 0.42 nd nd 98.7 1.8917 0.0142 0.1083 0.0000 0.0800 0.1964 0.0083 0.9216 0.7937 0.0307 nd nd 4.0447 0.0307 0.0000 0.0494 0.0000 0.0000 0.3722 0.5176 0.1103 82.4 Mf-04 m8 core 19 49.67 0.78 2.99 10.20 0.42 15.98 18.44 0.41 nd nd 98.89 1.8737 0.0221 0.1263 0.0067 0.0754 0.2464 0.0134 0.8984 0.7453 0.0300 nd nd 4.0377 0.0300 0.0000 0.0454 0.0000 0.0067 0.3466 0.5127 0.1406 78.5 cpx 10 PC-02 m21 (core 51.56 0.54 2.15 9.50 0.38 16.83 19.16 0.36 nd 100.48 1.9060 0.0150 0.0940 0.0000 0.0640 0.2297 0.0119 0.9272 0.7589 0.0258 4.0325 0.0258 0.0000 0.0382 0.0000 0.0000 0.3604 0.5127 0.1270 80.1 Pc-02 m1 rim) 51.57 0.47 1.70 10.34 0.47 17.33 16.95 0.33 99.16 1.9275 0.0132 0.0725 0.0024 0.0436 0.2796 0.0149 0.9653 0.6788 0.0239 4.0218 0.0239 0.0000 0.0197 0.0000 0.0024 0.3283 0.5208 0.1508 77.5 PC-02 m1 (core 7 51.01 0.53 2.56 9.20 0.29 16.52 19.38 0.45 nd nd 99.94 1.8946 0.0148 0.1054 0.0067 0.0691 0.2167 0.0091 0.9144 0.7713 0.0324 nd nd 4.0345 0.0324 0.0000 0.0367 0.0000 0.0067 0.3640 0.5142 0.1219 80.8 Pc-02 m1 rim) 50.86 0.65 2.00 11.06 0.43 17.28 15.66 0.37 98.31 1.9181 0.0184 0.0819 0.0070 0.0381 0.3107 0.0137 0.9712 0.6328 0.0271 4.0190 0.0271 0.0000 0.0110 0.0000 0.0070 0.3074 0.5247 0.1679 75.8 2 9 ° ix} 3g uw > = -=2 oOunacCoWo Saabesyeesas PC-02 PC-06 83mn86 (core 2043 51.11 0.33 3.43 6.57 0.23 17.05 20.12 0.02 0.08 98.94 1.8982 0.0092 0.1018 0.0484 0.0326 0.1715 0.0072 0.9437 0.8007 0.0006 0.0023 4.0163 0.0000 0.0000 0.0326 0.0023 0.0484 0.3587 0.5427 0.0986 84.6 15-May-85 Makushin clinopyroxene analyses PC-06 PC-06 83mn86 = 83mn86 rim) (core 2044 2045 wt% oxides $io2 49.37 49.71 Ti02 0.48 0.47 Al203 4.60 4.98 FeO 7.78 6.21 Mno 0.19 0.19 MgO 14.92 15.91 CaO 20.53 21.26 Na20 nd nd NiO 0.01 0.04 cr203 0.15 0.38 tot 98.03 99.15 atoms per 6 oxygens Si 1.8667 1.8495 Ti 0.0136 0.0132 Alt 0.1333 0.1505 Alo 0.0718 0.0680 Fe3+ 0.0297 0.0450 Fe2+ 0.2163 0.1482 Mn 0.0061 0.0060 Mg 0.8408 0.8822 Ca 0.8318 0.8476 Na nd nd Ni 0.0003 0.0012 Cr 0.0045 0.0112 tot 4.0149 4.0225 Ac 0.0000 0.0000 Jd 0.0000 0.0000 FeCaTs 0.0297 0.0450 CrCaTs 0.0045 0.0112 AlCaTs 0.0718 0.0680 Wo 0.3629 0.3617 En 0.5067 0.5465 Fs 0.1304 0.0918 mg# 79.5 85.6 PC-06 83mn86 core 2046 52.21 0.27 3.10 4.39 0.11 16.98 21.85 nd 0.04 1.01 99.96 1.9099 0.0074 0.0901 0.0436 0.0025 0.1318 0.0034 0.9257 0.8564 nd 0.0012 0.0292 4.0012 0.0000 0.0000 0.0025 0.0292 0.0436 0.3906 0.5334 0.0760 87.5 PC-06 83mn86 mid 2047 52.62 0.23 2.32 4.67 0.14 17.91 21.12 0.03 0.45 99.49 1.9299 0.0063 0.0701 0.0302 0.0141 0.1291 0.0043 0.9790 0.8300 0.0009 0.0130 4.0071 0.0000 0.0000 0.0141 0.0130 0.0302 0.3863 0.5422 0.0715 88.3 PC-06 83mn86 mid 2048 52.98 0.22 2.23 4.71 0.12 17.68 21.49 0.03 0.50 99.96 1.9351 0.0060 0.0649 0.0312 0.0072 0.1367 0.0037 0.9624 0.8411 0.0009 0.0144 4.0036 0.0000 0.0000 0.0072 0.0144 0.0312 0.3941 0.5305 0.0753 87.6 PC-06 83mn86 mid 2049 51.42 0.29 3.46 5.31 0.11 16.63 20.91 0.00 0.42 98.55 1.9090 0.0081 0.0910 0.0604 0.0021 0.1628 0.0035 0.9201 0.8318 0.0000 0.0123 4.0011 0.0000 0.0000 0.0021 0.0123 0.0604 0.3785 0.5281 0.0934 85.0 PC-06 83mn86 rim) 2050 50.91 0.33 3.52 7.19 0.25 16.80 19.60 0.03 0.13 98.76 1.8975 0.0092 0.1025 0.0521 0.0281 0.1960 0.0079 0.9332 0.7827 0.0009 0.0038 4.0140 0.0000 0.0000 0.0281 0.0038 0.0521 0.3494 0.5377 0.1130 82.6 PC-06 83mn86 core 2051 53.66 0.15 - 2.12 3.91 0.12 18.37 21.01 0.47 99.84 1.9496 0.0041 0.0504 0.0405 0.0000 0.1188 0.0037 0.9947 0.8179 0.0009 0.0135 3.9941 0.0000 0.0000 0.0000 0.0135 0.0405 0.3820 0.5521 0.0659 89.3 cpx 11 PC-06 83mn86 clot 2052 50.89 0.28 3.76 5.27 0.11 16.70 21.15 nd 0.02 0.63 98.81 1.8887 0.0078 0.1113 0.0532 0.0239 0.1397 0.0035 0.9237 0.8411 nd 0.0006 0.0185 4.0120 0.0000 0.0000 0.0239 0.0185 0.0532 0.3727 0.5449 0.0824 86.9 PC-06 83mn86 core 2053 49.75 0.42 4.59 6.10 0.11 15.60 21.75 0.03 0.46 98.81 1.8590 0.0118 0.1410 0.0612 0.0425 0.1481 0.0035 0.8688 0.8709 0.0009 0.0136 4.0213 0.0000 0.0000 0.0425 0.0136 0.0612 0.3767 0.5325 0.0908 85.4 PC-06 83mn86 core 2054 51.24 0.34 3.23 6.35 0.13 16.98 20.43 0.00 0.22 98.92 1.9027 0.0095 0.0973 0.0441 0.0278 0.1694 0.0041 0.9397 0.8129 0.0000 0.0065 4.0139 0.0000 0.0000 0.0278 0.0065 0.0441 0.3673 0.5361 0.0967 84.7 PC-09 83mn25 (core 2001 52.31 0.21 2.78 4.58 0.12 17.32 21.09 nd 0.00 0.63 99.04 1.9262 0.0058 0.0738 0.0469 0.0000 0.1410 0.0037 0.9505 0.8321 nd 0.0000 0.0183 3.9985 0.0000 0.0000 0.0000 0.0183 0.0469 0.3834 0.5369 0.0797 87.1 PC-09 83mn25 core 2002 53.24 0.19 2.18 4.57 0.16 17.53 21.16 nd 0.02 0.49 99.54 1.9481 0.0052 0.0519 0.0422 0.0000 0.1399 0.0050 0.9560 0.8296 nd 0.0006 0.0142 3.9926 0.0000 0.0000 0.0000 0.0142 0.0422 0.3867 0.5351 0.0783 87.2 Pc-09 83mn25 rim) 2003 51.32 0.32 3.38 6.47 0.20 16.36 20.33 0.02 0.15 98.55 1.9121 0.0090 0.0879 0.0606 0.0050 0.1966 0.0063 0.9084 0.8116 0.0006 0.0044 4.0025 0.0000 0.0000 0.0050 0.0044 0.0606 0.3708 0.5172 0.1119 82.2 Pc-09 83mn25 core 2004 50.40 0.38 3.62 5.60 0.16 15.49 21.88 0.05 0.25 97.83 1.8964 0.0108 0.1036 0.0570 0.0176 0.1586 0.0051 0.8686 0.8822 0.0015 0.0074 4.0088 0.0000 0.0000 0.0176 0.0074 0.0570 0.4000 0.5073 0.0926 84.6 15-May-85 Makushin clinopyroxene analyses PC-09 83mn25 (core 2005 wt% oxides sio2 51.03 Tio2 0.30 A203 2.94 FeO 6.67 MnO 0.21 MgO 16.88 Cad 19.39 Na20 nd NiO 0.00 cr203 0.07 tot 97.49 atoms per 6 oxygens Si 1.9198 Ti 0.0085 Alt 0.0802 Alo 0.0502 Fe3+ 0.0109 Fe2+ 0.1990 Mn 0.0067 Mg 0.9464 Ca 0.7816 Na nd Ni 0.0000 Cr 0.0021 tot 4.0054 Ac 0.0000 Jd 0.0000 FeCaTs 0.0109 CrCaTs 0.0021 AlCaTs 0.0502 Wo 0.3592 En 0.5295 Fs 0.1113 mg# 82.6 1 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 PC-09 3mn25 mid 2006 51.59 0.31 3.03 6.39 0.17 16.73 20.59 nd 0.00 0.25 99.06 -9133 -0086 -0867 -0458 -0163 «1819 -0053 -9247 -8182 nd -0000 -0073 -0082 -0000 -0000 -0163 -0073 -0458 -3744 -5228 = 1028 83.6 PC-09 83mn25 mid 2007 51.31 0.30 3.00 6.24 0.18 16.65 20.41 nd 0.01 0.21 98.31 1.9159 0.0084 0.0841 0.0479 0.0131 0.1817 0.0057 0.9265 0.8166 nd 0.0003 0.0062 4.0066 0.0000 0.0000 0.0131 0.0062 0.0479 0.3747 0.5228 0.1025 83.6 PC-09 83mn25 rim) 2008 51.35 0.31 3.12 6.54 0.16 17.05 20.16 nd 0.03 0.20 98.92 1.9070 0.0087 0.0930 0.0436 0.0262 0.1769 0.0050 0.9437 0.8022 nd 0.0009 0.0059 4.0131 0.0000 0.0000 0.0262 0.0059 0.0436 0.3633 0.5362 0.1005 84.2 PC-09 83mn25 core 2009 51.38 0.32 2.91 4.85 0.12 16.43 22.13 nd 0.04 0.75 98.93 1.9069 0.0089 0.0931 0.0342 0.0190 0.1315 0.0038 0.9088 0.8801 nd 0.0012 0.0220 4.0095 0.0000 0.0000 0.0190 0.0220 0.0342 0.4024 0.5220 0.0756 87.4 PC-09 83mn25 (core 2010 50.89 0.28 3.52 5.21 0.16 16.65 21.04 nd 0.01 0.57 98.33 1.8970 0.0078 0.1030 0.0517 0.0189 0.1436 0.0051 0.9250 0.8404 nd 0.0003 0.0168 4.0094 0.0000 0.0000 0.0189 0.0168 0.0517 0.3765 0.5397 0.0838 86.6 PC-09 83mn25 rim) 2011 50.61 0.30 3.39 6.64 0.20 16.84 19.04 nd 0.02 0.15 97.19 1.9088 0.0085 0.0912 0.0596 0.0101 0.1993 0.0064 0.9466 0.7695 0.0006 0.0045 4.0050 0.0000 0.0000 0.0101 0.0045 0.0596 0.3477 0.5389 0.1135 82.6 PC-11 m20 (core 1 51.60 0.61 1.72 11.04 0.46 16.33 18.28 0.40 nd nd 100.44 1.9172 0.0170 0.0828 0.0000 0.0487 0.2944 0.0145 0.9043 0.7278 0.0288 nd nd 4.0354 0.0288 0.0000 0.0198 0.0000 0.0000 0.3540 0.4874 0.1587 75.4 cpx 12 PC-11 m20 rim) 12 50.66 0.76 1.92 11.85 0.48 15.68 17.82 0.37 99.54 1.9074 0.0215 0.0926 0.0000 0.0495 0.3236 0.0153 0.8799 0.7189 0.0270 4.0358 0.0270 0.0000 0.0225 0.0000 0.0000 0.3482 0.4765 0.1753 73.1 Pc-11 m20 (core 21 50.36 0.68 1.91 10.40 0.42 16.24 18.48 0.44 nd 98.93 1.9000 0.0193 0.1000 0.0000 0.0614 0.2667 0.0134 0.9131 0.7471 0.0322 4.0533 0.0322 0.0000 0.0292 0.0000 0.0000 0.3589 0.4961 0.1449 77.4 PC-11 m20 rim) 22 50.37 0.79 1.90 11.95 0.54 15.26 18.05 0.34 nd nd 99.2 1.9070 0.0225 0.0930 0.0000 0.0480 0.3303 0.0173 0.8610 0.7322 0.0250 nd nd 4.0364 0.0250 0.0000 0.0231 0.0000 0.0000 0.3546 0.4665 0.1790 72.3 Pc-11 m20 core 23 51.27 0.58 1.83 10.09 0.44 16.85 18.54 0.30 nd nd 99.9 1.9105 0.0163 0.0895 0.0000 0.0570 0.2574 0.0139 0.9357 0.7402 0.0217 nd nd 4.0422 0.0217 0.0000 0.0354 0.0000 0.0000 0.3524 0.5079 0.1397 78.4 PC-11 m20 gm 16 50.46 0.71 1.74 12.33 0.59 16.06 17.05 0.30 nd nd 99.24 1.9082 0.0202 0.0918 0.0000 0.0514 0.3385 0.0189 0.9051 0.6909 0.0220 nd nd 4.0470 0.0220 0.0000 0.0294 0.0000 0.0000 0.3307 0.4871 0.1822 72.8 Pc-11 m20 gm 24 51.28 0.64 1.73 10.83 0.42 16.39 18.44 0.36 nd nd 100.09 1.9125 0.0180 0.0875 0.0000 0.0516 0.2862 0.0133 0.9110 0.7369 0.0260 nd nd 4.0429 0.0260 0.0000 0.0256 0.0000 0.0000 0.3557 0.4903 0.1540 76.1 1.9135 0.0220 0.0865 0.0000 0.0425 0.3888 0.0193 0.9150 0.6278 0.0243 4.0395 0.0243 0.0000 0.0182 0.0000 0.0000 0.3048 0.4879 0.2073 70.2 15-May-85 Makushin clinopyroxene analyses Pc-11 PK-02 m20 m2 rim (core 20 1 wt% oxides sio2 50.06 51.02 Ti02 0.69 0.59 Al203 1.75 1.56 FeO 13.54 11.55 Mno 0.66 0.57 MgO 15.08 14.56 CaO 16.67 18.90 Na20 0.35 0.28 NiO nd nd cr203 nd nd tot 98.8 99.03 atoms per 6 oxygens Si 1.9113 1.9335 Ti 0.0198 0.0168 Alt 0.0887 0.0665 Alo 0.0000 0.0032 Fe3+ 0.0491 0.0296 Fe2+ 0.3833 0.3365 Mn 0.0213 0.0183 Mg 0.8581 0.8223 Ca 0.6820 0.7675 Na 0.0259 0.0206 Ni nd nd cr nd nd tot 4.0394 4.0148 Ac 0.0259 0.0206 Jd 0.0000 0.0000 FeCaTs 0.0232 0.0090 CrCaTs 0.0000 0.0000 AlCaTs 0.0000 0.0032 Wo 0.3294 0.3776 En 0.4636 0.4417 Fs 0.2070 0.1807 mg# 69.1 71.0 PK-02 m52 rim) 12 50.59 0.74 2.26 11.43 0.42 14.62 18.66 0.34 nd nd 99.06 1.9133 0.0210 0.0867 0.0141 0.0305 0.3310 0.0135 0.8240 0.7562 0.0249 nd nd 4.0153 0.0249 0.0000 0.0056 0.0000 0.0141 0.3683 0.4507 0.1810 71.3 TT-10 83mn77 (core 2077 50.98 0.59 3.19 7.24 0.20 14.89 21.70 nd 0.01 0.01 98.81 1.9097 0.0166 0.0903 0.0505 0.0063 0.2205 0.0063 0.8312 0.8710 nd 0.0003 0.0003 4.0031 0.0000 0.0000 0.0063 0.0003 0.0505 0.4069 0.4687 0.1244 79.0 TT-10 83mn77 rim) 2078 51.23 0.65 2.17 9.74 0.38 15.26 19.15 0.00 0.01 98.59 1.9330 0.0184 0.0670 0.0295 0.0003 0.3071 0.0121 0.8581 0.7742 0.0000 0.0003 4.0001 0.0000 0.0000 0.0003 0.0003 0.0295 0.3721 0.4624 0.1655 73.6 TT-10 83mn77 core 2079 51.49 0.57 3.00 7.44 0.22 15.07 21.21 0.00 0.00 1.9220 0.0160 0.0780 0.0540 0.0000 0.2323 0.0070 0.8384 0.8483 0.0000 0.0000 3.9960 0.0000 0.0000 0.0000 0.0000 0.0540 0.3971 0.4721 0.1308 78.3 TT-10 83mn77 (core 2081 51.10 0.53 2.68 7.66 0.24 15.24 20.83 0.02 0.01 98.31 1.9234 0.0150 0.0766 0.0423 0.0040 0.2371 0.0077 0.8549 0.8401 0.0006 0.0003 4.0020 0.0000 0.0000 0.0040 0.0003 0.0423 0.3967 0.4723 0.1310 78.3 TT-10 83mn77 rim) 2082 50.85 0.66 2.12 9.47 0.30 14.90 19.40 0.01 0.00 97.71 1.9357 0.0189 0.0643 0.0308 0.0000 0.3015 0.0097 0.8453 0.7913 0.0003 0.0000 3.9978 0.0000 0.0000 0.0000 0.0000 0.0308 0.3802 0.4568 0.1629 73.7 cpx 13 TT-10 83mn77 core 2083 50.63 0.55 3.15 7.37 0.20 14.80 21.37 0.00 0.02 98.09 1.9109 0.0156 0.0891 0.0511 0.0061 0.2265 0.0064 0.8325 0.8642 0.0000 0.0006 4.0031 0.0000 0.0000 0.0061 0.0006 0.0511 0.4032 0.4692 0.1276 78.6 98.35 1.8499 0.0266 0.1501 0.0474 0.0496 0.2255 0.0074 0.8094 0.8590 nd nd nd 4.0248 0.0000 0.0000 0.0496 0.0000 0.0474 0.3810 0.4841 0.1349 78.2 TT-22 mao rim) 51.08 0.54 1.63 11.12 0.46 14.87 19.27 nd nd nd 98.97 1.9354 0.0154 0.0646 0.0082 0.0256 0.3268 0.0148 0.8397 0.7823 nd nd nd 4.0128 0.0000 0.0000 0.0256 0.0000 0.0082 0.3743 0.4504 0.1753 72.0 TT-22 m29 (core 47.08 1.07 5.59 9.41 0.21 13.85 21.76 98.97 1.7917 0.0306 0.2083 0.0425 0.1045 0.1950 0.0068 0.7855 0.8873 4.0523 0.0000 0.0000 0.1045 0.0000 0.0425 0.3701 0.5046 0.1252 80.1 TT-22 m29 rim) 49.91 0.69 3.06 11.11 0.45 14.83 18.08 98.13 1.9023 0.0198 0.0977 0.0398 0.0182 0.3359 0.0145 0.8424 0.7384 4.0091 0.0000 0.0000 0.0182 0.0000 0.0398 0.3402 0.4717 0.1881 71.5 15-May-85 Makushin clinopyroxene analyses TT-22 TT-22 m29 m29 gm gm 5 6 wt% oxides sio2 50.72 51.38 Tio2 0.56 0.49 A203 1.25 1.45 FeO 12.88 12.23 MnO 0.49 0.52 MgO 15.13 15.32 cad 16.91 17.24 Na2zo nd nd NiO nd nd cr203 nd nd tot 97.94 98.63 atoms per 6 oxygens Si 1.9464 1.9507 Ti 0.0162 0.0140 Alt 0.0536 0.0493 Alo 0.0030 0.0156 Fe3+ 0.0183 0.0057 Fe2+ 0.3951 0.3826 Mn 0.0159 0.0167 Mg 0.8653 0.8668 Ca 0.6953 0.7013 Na nd nd Ni nd nd Cr nd nd tot 4.0091 4.0028 Ac 0.0000 0.0000 Jd 0.0000 0.0000 FeCaTs 0.0183 0.0057 CrCaTs 0.0000 0.0000 AlCaTs 0.0030 0.0156 Wo 0.3370 0.3400 En 0.4551 0.4579 Fs 0.2078 0.2021 mg# 68.7 69.4 TT-22 m29 gm 13 50.07 0.71 1.9516 0.0208 0.0484 0.0021 0.0047 0.5488 0.0261 0.6849 0.7150 nd nd nd 4.0024 0.0000 0.0000 0.0047 0.0000 0.0021 0.3541 0.3586 0.2873 55.5 WB-05 m22 (core 5 50.44 0.37 2.93 5.22 0.13 15.97 22.60 0.20 nd nd 97.86 1.8975 0.0105 0.1025 0.0274 0.0542 0.1100 0.0041 0.8953 0.9110 0.0146 nd nd 4.0271 0.0146 0.0000 0.0396 0.0000 0.0274 0.4220 0.5148 0.0633 89.1 WB-05 m22 rim 48.93 0.91 3.65 9.69 0.32 14.08 20.09 0.22 97.89 1.8700 0.0262 0.1300 0.0344 0.0433 0.2665 0.0104 0.8020 0.8227 0.0163 4.0216 0.0163 0.0000 0.0269 0.0000 0.0344 0.3806 0.4649 0.1545 75.1 WB-05 m22 rim) 7 48.64 0.74 4.55 7.31 0.17 14.39 22.39 0.28 nd nd 98.47 1.8392 0.0210 0.1608 0.0420 0.0767 0.1545 0.0054 0.8109 0.9072 0.0205 nd nd 4.0383 0.0205 0.0000 0.0561 0.0000 0.0420 0.4045 0.5002 0.0953 84.0 WB-05 (core S n= PeaNRsiaara 8 1.8466 0.0219 0.1534 0.0363 0.0732 0.1709 0.0067 0.8214 0.8863 0.0198 nd nd 4.0366 0.0198 0.0000 0.0534 0.0000 0.0363 0.3983 0.4981 0.1036 82.8 WB-05 m22 rim) 9 47.86 0.96 4.59 10.17 0.25 13.63 20.58 0.38 nd nd 98.42 1.8279 0.0276 0.1721 0.0346 0.0824 0.2424 0.0081 0.7758 0.8422 0.0281 nd nd 4.0412 0.0281 0.0000 0.0543 0.0000 0.0346 0.3767 0.4749 0.1484 76.2 WB-05 m22 (core 10 50.58 0.58 2.29 8.76 0.30 15.39 20.25 0.19 nd nd 98.34 1.9127 0.0165 0.0873 0.0148 0.0395 0.2375 0.0096 0.8673 0.8205 0.0139 nd nd 4.0197 0.0139 0.0000 0.0256 0.0000 0.0148 0.3901 0.4788 0.1311 78.5 WB-05 m22 rim 1 47.25 0.89 5.90 7.74 0.26 13.95 21.71 0.28 nd nd 97.98 1.7993 0.0255 0.2007 0.0642 0.0855 0.1610 0.0084 0.7917 0.8858 0.0207 nd nd 4.0428 0.0207 0.0000 0.0649 0.0000 0.0642 0.3784 0.5166 0.1050 83.1 WB-05 m22 core) 12 50.23 0.57 3.35 7.65 0.26 14.80 21.58 0.30 98.74 1.8881 0.0161 0.1119 0.0365 0.0431 0.1974 0.0083 0.8291 0.8692 0.0219 4.0216 0.0219 0.0000 0.0213 0.0000 0.0365 0.4057 0.4800 0.1143 80.8 WB-05 m22 13 50.93 0.50 1.36 12.63 0.57 14.20 17.08 0.32 nd nd 97.59 1.9570 0.0144 0.0430 0.0186 0.0000 0.4059 0.0186 0.8132 0.7032 0.0238 3.9977 0.0000 0.0186 0.0000 0.0000 0.0000 0.3516 0.4325 0.2159 66.7 WB-05 m22 14 47.34 1.28 3.80 11.89 0.40 13.11 18.96 0.37 97.15 1.8423 0.0375 0.1577 0.0166 0.0662 0.3208 0.0132 0.7603 0.7906 0.0279 4.0331 0.0279 0.0000 0.0383 0.0000 0.0166 0.3679 0.4446 0.1876 70.3 Makushin orthopyroxene analyses wt% oxides sio2 Ti02 A203 Fed MnO MgO Cad Na2o NiO cr203 tot LR-02 83mn65 core 3001 52.79 0.30 0.83 21.42 0.74 22.17 2.03 nd 0.04 0.01 100.33 atoms per 6 oxygens Si Ti Alt Alo Fe3+ Fe2+ Mn Mg Ca Na Ni Cr tot NaR3Si206 NaTiALSi06 R2TiAL206 R2R3ALSi06 Wo En Fs mg# 1.9637 0.0084 0.0363 0.0001 0.0192 0.6472 0.0233 1.2290 0.0809 nd 0.0012 0.0003 4.0096 0.0000 0.0000 0.0084 0.0195 0.0419 0.6276 0.3305 65.5 LR-02 83mn65 core 3002 52.89 0.32 0.72 19.32 0.69 23.45 2.00 nd 0.01 0.02 99.42 1.9662 0.0089 0.0316 0.0000 0.0131 0.5876 0.0217 1.2992 0.0797 nd 0.0003 0.0006 4.0088 0.0000 0.0000 0.0089 0.0137 0.0410 0.6604 0.2987 68.9 LR-02 83mn65 (core 3003 53.04 0.28 0.99 19.95 0.64 22.82 2.15 nd 0.03 0.01 99.91 * 1.9665 0.0078 0.0335 0.0098 0.0077 0.6109 0.0201 1.2609 0.0854 nd 0.0009 0.0003 4.0039 0.0000 0.0000 0.0078 0.0178 0.0442 0.6439 0.3119 67.4 LR-02 83mn65 (core 3006 52.21 0.36 1.20 19.83 0.65 22.74 1.98 0.00 0.02 98.99 1.9548 0.0101 0.0452 0.0077 0.0166 0.6043 0.0206 1.2689 0.0794 0.0000 0.0006 4.0083 0.0000 0.0000 0.0101 0.0250 0.0414 0.6493 0.3092 67.7 LR-02 83mn65 rim) 3007 53.48 0.27 0.97 19.41 0.62 23.28 1.99 0.01 0.00 100.03 1.9725 0.0075 0.0275 0.0147 0.0000 0.5987 0.0194 1.2797 0.0786 0.0003 0.0000 3.9989 0.0000 0.0000 0.0075 0.0125 0.0406 0.6536 0.3058 68.1 opx 1 Ss 222 S8sansa 1.9583 0.0082 0.0357 0.0000 0.0194 0.6844 0.0244 1.2123 0.0729 0.0000 0.0000 4.0157 0.0000 0.0000 0.0082 0.0194 0.0376 0.6152 0.3473 63.9 LR-02 83mn65 rim) 3009 53.03 0.31 0.94 20.09 0.68 23.82 1.96 0.00 0.02 100.85 1.9498 * 0.0086 0.0407 0.0000 0.0230 0.5947 0.0212 1.3052 0.0772 0.0000 0.0006 4.0210 0.0000 0.0000 0.0086 0.0236 0.0397 0.6597 0.3006 68.7 LR-02 83mn65 (core 2018 52.46 0.28 0.74 21.40 0.75 21.50 2.02 nd 0.03 0.00 99.18 1.9745 0.0079 0.0255 0.0073 0.0023 0.6713 0.0239 1.2060 0.0815 nd 0.0009 0.0000 4.0012 0.0000 0.0000 0.0079 0.0097 0.0420 0.6155 0.3426 64.2 3o0 1.9515 0.0093 0.0466 0.0000 0.0281 0.5869 0.0202 1.2956 0.0776 nd 0.0000 0.0000 4.0159 0.0000 0.0000 0.0093 0.0281 0.0404 0.6605 0.2992 68.8 LR-06a 83mn52 (core 3047 52.65 0.36 0.92 21.22 0.74 22.29 1.81 0.03 0.00 100.02 1.9618 0.0101 0.0382 0.0022 0.0158 0.6455 0.0234 1.2378 0.0723 0.0009 0.0000 4.0079 0.0000 0.0000 0.0101 0.0180 0.0375 0.6326 0.3299 65.7 LR-06a 83mn52 (core 3049 53.23 0.32 1.01 21.14 0.67 22.28 1.74 nd 0.02 0.00 100.41 1.9708 0.0089 0.0292 0.0148 0.0000 0.6546 0.0210 1.2293 0.0690 nd 0.0006 0.0000 3.9983 0.0000 0.0000 0.0089 0.0114 0.0357 0.6292 0.3350 65.3 LR-06a 83mn52 rim) 3050 53.16 0.30 1.07 19.24 0.55 23.71 2.00 0.03 0.02 100.08 1.9599 0.0083 0.0401 0.0064 0.0166 0.5767 0.0172 1.3027 0.0790 0.0009 0.0006 4.0083 0.0000 0.0000 0.0083 0.0235 0.0410 0.6647 0.2943 69.3 15-May-85 Makushin orthopyroxene analyses LR-06a 83mn52 (core 3051 wt% oxides sio2 53.07 Tio2 0.32 A203 0.92 Feo 20.04 Mno 0.71 MgO 22.79 Cad 2.02 Na20 nd NiO 0.01 cr203 0.01 tot 99.89 atoms per 6 oxygens Si 1.9685 Ti 0.0089 Alt 0.0315 Alo 0.0087 Fe3+ 0.0046 Fe2+ 0.6170 Mn 0.0223 Mg 1.2598 Ca 0.0803 Na nd Ni 0.0003 Cr 0.0003 tot 4.0023 NaR3Si206 0.0000 NaTiALSi06 0.0000 R2TiAL206 0.0089 R2R3ALSi06 = 0.0137 Wo 0.0415 En 0.6434 Fs 0.3151 mg# 67.1 LR-06a 83mn52 rim) 3052 53.29 0.23 0.78 19.52 0.69 23.56 1.92 nd 0.01 0.03 100.03 1.9685 0.0064 0.0315 0.0025 0.0154 0.5877 0.0216 1.2970 0.0760 nd 0.0003 0.0009 4.0077 0.0000 0.0000 0.0064 0.0187 0.0393 0.6612 0.2996 68.8 LR-06a 83mn52 gms 3053 53.48 0.28 0.84 19.41 0.67 23.07 1.95 nd 0.00 0.01 99.71 1.9789 0.0078 0.0211 0.0155 0.0000 0.6007 0.0210 1.2722 0.0773 nd 0.0000 0.0003 3.9948 0.0000 0.0000 0.0078 0.0055 0.0399 0.6522 0.3079 67.9 wn n= =-WOD-oOW BSRALSASLKS See 1.9639 0.0089 0.0361 0.0080 0.0103 0.6062 0.0204 1.2746 0.0758 0.0009 0.0000 4.0051 0.0000 0.0000 0.0089 0.0183 0.0393 0.6511 0.3096 67.8 LR-06a 83mn52 rim 3055 53.14 0.33 1.10 19.00 0.62 23.81 1.95 nd 0.00 0.02 99.97 1.9593 0.0092 0.0407 0.0071 0.0148 0.5711 0.0194 1.3083 0.0770 nd 0.0000 0.0006 4.0074 0.0000 0.0000 0.0092 0.0224 0.0400 0.6683 0.2917 « 69.6 LR-06a 83mn52 rim 3056 53.15 0.37 1.11 18.30 0.67 23.89 1.98 nd 0.00 0.02 99.49 1.9632 0.0103 0.0368 0.0115 0.0042 0.5611 0.0210 1.3151 0.0784 nd 0.0000 0.0006 4.0021 0.0000 0.0000 0.0103 0.0163 0.0406 0.6724 0.2869 70.1 LR-06f 83mn57 (core 3057 52.91 0.31 0.92 19.93 0.77 23.13 1.92 0.02 0.03 99.94 1.9619 0.0086 0.0381 0.0021 0.0178 0.6002 0.0242 1.2782 0.0763 0.0006 0.0009 4.0089 0.0000 0.0000 0.0086 0.0208 0.0396 0.6535 0.3069 68.0 opx 2 LR-06f 83mn57 rim) 3059 53.15 0.32 1.27 19.12 0.66 23.35 2.00 0.00 0.02 99.89 1.9619 0.0089 0.0381 0.0172 0.0025 0.5878 0.0206 1.2846 0.0791 0.0000 0.0006 4.0012 0.0000 0.0000 0.0089 0.0203 0.0412 0.6578 0.3010 68.6 LR-06f 83mn57 core 3060 52.47 0.31 0.78 20.29 0.73 22.33 2.01 0.01 0.03 98.96 1.9695 0.0088 0.0305 0.0040 0.0081 0.6288 0.0232 1.2491 0.0808 0.0003 0.0009 4.0041 0.0000 0.0000 0.0088 0.0130 0.0417 0.6374 0.3209 66.5 LR-06f 83mn57 w 82 -s Nno= uw -ROM=OW TASAaSRSRus = ° coo 1.9537 0.0064 0.0463 0.0005 0.0322 0.5462 0.0206 1.3322 0.0769 nd 0.0003 0.0009 4.0161 0.0000 0.0000 0.0064 0.0336 0.0401 0.6808 0.2791 70.9 LR-11 m9 rim 1 48.06 0.23 0.91 17.81 0.56 22.70 1.76 0.02 nd nd 92.05 1.9327 0.0070 0.0431 0.0000 0.0292 0.5698 0.0191 1.3605 0.0758 0.0016 nd nd 4.0388 0.0016 0.0000 0.0070 0.0277 0.0385 0.6777 0.2838 70.5 LR-11 mg core 12 47.52 0.21 1.11 18.51 0.51 21.18 1.56 0.06 90.66 1.9451 0.0065 0.0536 0.0000 0.0406 0.5930 0.0177 1.2920 0.0684 0.0048 4.0217 0.0048 0.0000 0.0065 0.0359 0.0358 0.6609 0.3033 68.5 LR-12b 01-409 (core 3022 52.85 0.30 0.81 21.65 0.81 21.47 Sco S$ss2a 1.9767 0.0084 0.0233 0.0124 0.0000 0.6772 0.0257 1.1968 0.0765 nd 0.0000 0.0000 3.9970 0.0000 0.0000 0.0084 0.0064 0.0395 0.6134 0.3471 63.9 LR-12b 01-409 rim) 3023 53.53 0.29 1.02 19.43 0.70 23.77 1.89 0.00 0.00 100.63 1.9633 0.0080 0.0367 0.0074 0.0133 0.5827 0.0217 1.2993 0.0743 0.0000 0.0000 4.0067 0.0000 0.0000 0.0080 0.0207 0.0385 0.6638 0.2977 69.0 wn N_N PSOWSON SRSAREALSSES 3 soo 1.9772 0.0079 0.0228 0.0063 0.0001 0.7395 0.0263 1.1408 0.0786 0.0000 0.0006 4.0001 0.0000 0.0000 0.0079 0.0070 0.0404 0.5822 0.3774 60.7 15-May-85 Makushin orthopyroxene analyses LR-12b D1-409 rim) 3025 wt% oxides sio2 52.80 Ti02 0.35 AL203 0.71 Fed 23.34 MnO 0.74 MgO 20.64 Cad 1.99 Na20 nd NiO 0.00 cr203 0.03 tot 100.60 atoms per 6 oxygens Si 1.9744 Ti 0.0098 Al t 0.0256 Alo 0.0057 Fe3+ 0.0000 Fe2+ 0.7299 Mn 0.0234 Mg = 1.1502 Ca 0.0797 Na nd Ni 0.0000 Cr 0.0009 tot 3.9997 NaR3Si206 0.0000 NaTiAlSi06 0.0000 R2TiAL206 0.0098 R2R3ALSi06 0.0060 Wo 0.0410 En 0.5867 Fs 0.3723 mg# 61.2 LR-12b 01-409 (core 3026 52.40 0.27 0.84 23.22 0.83 21.14 1.72 nd 0.00 0.01 100.43 1.9629 0.0076 0.0371 0.0000 0.0216 0.7059 0.0263 1.1802 0.0690 nd 0.0000 0.0003 4.0108 0.0000 0.0000 0.0076 0.0219 0.0359 0.6033 0.3608 62.6 LR-12b D1-409 rim) 3027 52.95 0.32 0.71 22.96 0.80 20.66 2.04 nd 0.00 0.00 100.44 1.9795 0.0090 0.0205 0.0108 0.0000 0.7179 0.0253 1.1511 0.0817 nd 0.0000 0.0000 3.9958 0.0000 0.0000 0.0090 0.0025 0.0421 0.5899 0.3679 61.6 LR-12b 01-409 (core 3028 52.33 0.34 0.83 23.20 0.81 20.56 1.97 0.03 0.01 100.08 1.9683 0.0096 0.0317 0.0051 0.0070 0.7228 0.0258 1.1525 0.0794 0.0009 0.0003 4.0035 0.0000 0.0000 0.0096 0.0124 0.0411 0.5893 0.3696 61.5 LR-12b 01-409 rim) 3029 52.90 0.38 1.15 20.53 0.58 23.01 1.93 0.00 0.05 100.53 1.9534 0.0106 0.0466 0.0035 0.0206 0.6134 0.0181 1.2663 0.0764 0.0000 0.0015 4.0103 0.0000 0.0000 0.0106 0.0255 0.0398 0.6469 0.3134 67.4 LR-12b 01-409 ol rim 3031 53.25 0.34 0.98 19.45 0.68 22.71 2.02 0.00 0.00 99.43 1.9771 0.0095 0.0229 0.0200 0.0000 0.6040 0.0214 1.2567 0.0804 0.0000 0.0000 3.9919 0.0000 0.0000 0.0095 0.0039 0.0417 0.6472 0.3111 67.5 LR-12n 01-931 core 3032 51.63 0.31 0.72 23.46 0.80 20.45 1.83 0.01 0.00 99.21 1.9638 0.0089 0.0323 0.0000 0.0146 0.7317 0.0258 1.1592 0.0746 0.0003 0.0000 4.0112 0.0000 0.0000 0.0089 0.0146 0.0384 0.5895 0.3721 61.3 opx 3 LR-12n 01-931 core 3033 52.63 0.31 1.12 18.95 0.56 24.36 1.89 0.03 0.00 99.85 1.9447 0.0086 0.0488 0.0000 0.0316 0.5540 0.0175 1.3414 0.0748 0.0009 0.0000 4.0223 0.0000 0.0000 0.0086 0.0316 0.0388 0.6803 0.2810 70.8 LR-12n 01-931 rim 3034 52.40 0.29 0.92 20.07 0.70 23.75 1.83 0.02 0.00 99.98 1.9454 “0.0081 0.0403 0.0000 0.0241 0.5991 0.0220 1.3141 0.0728 0.0006 0.0000 4.0264 0.0000 0.0000 0.0081 0.0241 0.0373 0.6613, 0.3015 68.7 LR-12n 01-931 core 3035 52.75 0.30 0.88 21.21 0.70 22.16 1.83 0.05 0.02 99.90 1.9672 0.0084 0.0328 0.0059 0.0095 0.6520 0.0221 1.2316 0.0731 0.0015 0.0006 4.0048 0.0000 0.0000 0.0084 0.0160 0.0378 0.6291 0.3330 65.4 LR-12n 01-931 rim 3036 52.56 0.30 1.05 22.42 0.70 20.89 1.87 0.00 0.00 99.79 1.9721 0.0085 0.0279 0.0186 0.0000 0.7035 0.0222 1.1682 0.0752 0.0000 0.0000 3.9962 0.0000 0.0000 0.0085 0.0109 0.0390 0.5998 0.3612 62.4 LR-12n 01-931 ol rim 1057 53.35 0.31 0.99 19.83 0.71 23.16 1.89 0.01 0.01 100.26 1.9679 0.0086 0.0321 0.0109 0.0037 0.6080 0.0222 1.2732 0.0747 0.0003 0.0003 4.0019 0.0000 0.0000 0.0086 0.0149 0.0387 0.6506 0.3107 67.7 M1-01 83mn41 core 3010 52.59 0.23 0.54 21.44 0.84 21.86 1.78 0.00 0.00 99.28 1.9770 0.0065 0.0230 0.0009 0.0092 0.6649 0.0267 1.2247 0.0717 0.0000 0.0000 4.0046 0.0000 0.0000 0.0065 0.0100 0.0369 0.6242 0.3389 64.8 M1-01 83mn41 (core 3011 52.41 0.31 0.94 21.75 0.81 21.62 1.71 0.00 0.02 99.57 1.9666 0.0087 0.0334 0.0082 0.0072 0.6754 0.0257 1.2090 0.0688 0.0000 0.0006 4.0036 0.0000 0.0000 0.0087 0.0159 0.0357 0.6187 0.3456 64.2 M1-01 83mn41 rim) 3012 52.28 0.35 1.13 20.50 0.67 22.94 1.79 0.02 0.02 99.70 1.9490 0.0098 0.0497 0.0000 0.0294 0.6097 0.0212 1.2745 0.0715 0.0006 0.0006 4.0160 0.0000 0.0000 0.0098 0.0300 0.0373 0.6512 0.3115 67.6 15-May-85 Makushin orthopyroxene analyses M1-01 83mn41 core 3013 wt% oxides sio2 52.43 Tio2 0.33 AL203 1.00 FeO 21.91 MnO 0.87 MgO 21.84 Cad 1.80 Na20 nd NiO 0.00 cr203 0.00 tot 100.18 atoms per 6 oxygens Si 1.9580 Ti 0.0093 Al t 0.0420 Alo 0.0020 Fe3+ 0.0214 Fe2+ 0.6629 Mn 0.0275 Mg 1.2155 Ca 0.0720 Na nd Ni 0.0000 Cr 0.0000 tot 4.0107 NaR3Si206 0.0000 NaTiAlSi06 0.0000 R2TiAL206 0.0093 R2R3ALSi06 = 0.0235 Wo 0.0376 En 0.6228 Fs 0.3396 mg# 64.7 M1-01 83mn41 core 3014 52.08 0.34 1.14 21.80 0.75 21.63 1.81 nd 0.00 0.03 99.58 1.9559 0.0096 0.0441 0.0063 0.0177 0.6670 0.0239 1.2106 0.0728 nd 0.0000 0.0009 4.0088 0.0000 0.0000 0.0096 0.0249 0.0380 0.6202 0.3417 64.5 M1-51c m43c (core 7 51.75 0.31 0.81 23.04 1.11 21.39 1.65 0.01 nd nd 100.07 1.9495 0.0088 0.0360 0.0000 0.0184 0.7075 0.0354 1.2009 0.0666 0.0007 nd nd 4.0238 0.0007 0.0000 0.0088 0.0177 0.0342 0.6078 0.3581 62.9 M1-51¢ m3c (core 11 52.68 0.31 0.83 22.01 0.93 22.50 1.62 0.02 nd nd 100.90 1.9536 0.0086 0.0363 0.0000 0.0190 0.6636 0.0292 1.2435 0.0644 0.0014 nd nd 4.0196 0.0014 0.0000 0.0086 0.0176 0.0331 0.6305 0.3365 65.2 M1-51¢ m43c rim) 12 52.58 0.23 0.81 21.95 0.51 21.97 1.69 0.11 nd nd 99.85 1.9657 0.0065 0.0343 0.0014 0.0200 0.6663 0.0162 1.2241 0.0677 0.0080 nd nd 4.0100 0.0080 0.0000 0.0065 0.0134 0.0349 0.6249 0.3401 64.8 S222 83NSEHeE © oe 1.9552 0.0102 0.0448 0.0059 0.0185 0.6448 0.0246 1.2248 0.0804 nd nd nd 4.0093 0.0000 0.0000 0.0102 0.0244 0.0420 0.6276 0.3304 65.5 opx 4 Non PRNO=OON S222 8HISAVB 3 1.9546 0.0082 0.0349 0.0000 0.0186 0.6558 0.0251 1.2493 0.0732 4.0197 0.0000 0.0000 0.0082 0.0186 0.0375 0.6312 0.3313 65.6 Md-04 (core 52.05 0.32 1.14 20.34 0.54 22.49 1.90 nd nd nd 98.78 1.9565 “0.0090 0.0435 0.0071 0.0183 0.6211 0.0172 1.2599 0.0765 nd nd nd 4.0092 0.0000 0.0000 0.0090 0.0254 0.0398 0.6431 0.3171 67.0 Md-04 rim) 52.63 0.40 0.88 18.63 0.46 24.33 2.28 nd nd nd 99.61 1.9482 0.0111 0.0384 0.0000 0.0161 0.5606 0.0144 1.3422 0.0904 nd nd nd 4.0215 0.0000 0.0000 0.0111 0.0161 0.0460 0.6729 0.2811 70.5 Md-04 (core 10 52.03 0.31 0.85 20.57 0.80 22.80 1.97 nd nd nd 99.33 1.9511 0.0087 0.0376 0.0000 0.0201 0.6250 0.0254 1.2742 , 0.0792 nd nd nd 4.0214 0.0000 0.0000 0.0087 0.0201 0.0406 0.6437 0.3157 67.1 Md-04 (core 12 52.51 0.37 1.07 20.08 0.43 23.64 2.13 100.23 1.9431 0.0103 0.0467 0.0000 0.0261 0.5954 0.0135 1.3037 0.0845 4.0232 0.0000 0.0000 0.0103 0.0261 0.0434 0.6567 0.2999 68.7 Md-14 m4 (core 14 49.86 0.33 0.93 21.30 0.60 20.67 2.07 95.76 1.9527 0.0097 0.0429 0.0000 0.0235 0.6741 0.0199 1.2064 0.0869 4.0161 0.0000 0.0000 0.0097 0.0235 0.0449 0.6127 0.3424 64.2 1.9471 0.0101 0.0415 0.0000 0.0212 0.6609 0.0203 1.2378 0.0830 4.0220 0.0000 0.0000 0.0101 0.0212 0.0426 0.6242 0.3333 65.2 1.9483 0.0098 0.0436 0.0000 0.0239 0.6706 0.0187 1.2220 0.0832 4.0201 0.0000 0.0000 0.0098 0.0239 0.0429 0.6180 0.3391 64.6 15-May-85 Makushin orthopyroxene analyses Md-14 m4 (core 19 wt% oxides sio2 52.34 Tio2 0.30 Al203 0.90 FeO 21.51 MnO 0.64 MgO 22.43 Cao 2.07 Na20 nd NiO nd cr203 nd tot 100.19 atoms per 6 oxygens Si 1.9518 Ti 0.0084 Alt 0.0396 Alo 0.0000 Fe3+ 0.0227 Fe2+ 0.6481 Mn 0.0202 Mg 1.2465 Ca 0.0827 Na nd Ni nd cr nd tot 4.0200 NaR3Si206 0.0000 NaTiAlSi06 0.0000 R2TiAL206 0.0084 R2R3ALSIi06 §=— 0.0227 Wo 0.0425 En 0.6300 Fs 0.3275 mg# 65.8 Md-14 m4 rim) 20 52.15 0.30 1.02 21.13 0.58 22.26 2.07 nd nd nd 99.51 1.9543 0.0085 0.0451 0.0000 0.0282 0.6341 0.0184 1.2432 0.0831 nd nd nd 4.0147 0.0000 0.0000 0.0085 0.0282 0.0432 0.6336 0.3232 66.2 1.9462 0.0092 0.0417 0.0000 0.0232 0.6246 0.0271 1.2682 0.0834 nd nd nd 4.0237 0.0000 0.0000 0.0092 0.0232 0.0429 0.6413 0.3158 67.0 Me-06 m39 rim 18 52.16 0.29 0.87 20.15 0.78 23.43 1.67 nd nd nd 99.35 1.9497 0.0082 0.0383 0.0000 0.0220 0.6079 0.0247 1.3052 0.0669 nd nd nd 4.0230 0.0000 0.0000 0.0082 0.0220 0.0343 0.6589 0.3068 68.2 ul ao. «a ONFONSCON SAaaresnyys 3 0.0106 0.0336 0.0000 0.0124 0.5310 0.0213 1.3581 0.0857 0.0022 4.0138 0.0022 0.0000 0.0106 0.0103 0.0439 0.6874 0.2688 71.9 PC-11 m20 (core 4 53.07 0.26 0.89 18.16 0.66 25.43 2.11 0.05 nd nd 100.63 1.9403 0.0071 0.0384 0.0000 0.0241 0.5312 0.0204 1.3856 0.0827 0.0035 nd nd 4.0334 0.0035 0.0000 0.0071 0.0205 0.0419 0.6926 0.2655 72.3 1.9512 0.0100 0.0339 0.0000 0.0139 0.5359 0.0200 1.3666 0.0881 0.0021 nd nd 4.0218 0.0021 0.0000 0.0100 0.0118 0.0447 0.6862 0.2691 71.8 PC-11 m20 (core 17 52.25 0.34 0.70 18.13 0.69 24.62 2.18 0.04 nd 98.95 1.9460 0.0095 0.0307 0.0000 0.0117 0.5530 0.0218 1.3665 0.0870 0.0029 4.0291 0.0029 0.0000 0.0095 0.0088 0.0438 0.6808 0.2755 71.2 Pc-11 m20 rim) 18 52.56 0.28 0.82 18.40 0.65 24.23 2.17 0.05 99.16 1.9531 * 0.0078 0.0359 0.0000 0.0203 0.5516 0.0205 1.3419 0.0864 0.0036 4.0211 0.0036 0.0000 0.0078 0.0167 0.0442 0.6774 0.2784 70.9 Makushin pigeonite compositions LR-02 83mn65 rim 4001 wt% oxides sio2 52.43 Ti02 0.33 AL203 0.94 FeO 19.99 MnO 0.68 MgO 19.94 Cad 4.40 NiO 0.02 cCr203 0.03 tot 98.76 atoms per 6 oxygens Si 1.9810 Ti 0.0094 Alt 0.0190 Alo 0.0229 Fe3+ 0.0000 Fe2+ 0.6317 Mn 0.0218 Mg 1.1228 Ca 0.1781 Ni 0.0006 Cr 0.0009 tot 3.9882 FeCaTs 0.0000 CrCaTs 0.0009 AlCaTs 0.0229 Wo 0.1108 En 0.5690 Fs 0.3201 mg# 64.0 LR-02 83mn65 rim 4002 51.88 0.36 0.81 19.85 0.70 18.74 6.15 0.00 0.00 98.49 1.9771 0.0103 0.0229 0.0134 0.0000 0.6326 0.0226 1.0643 0.2511 0.0000 0.0000 3.9944 0.0000 0.0000 0.0134 0.1448 0.5364 0.3188 62.7 LR-11 mig core 1 49.67 0.33 2.08 21.08 0.74 20.62 2.21 nd nd 96.73 1.9243 0.0096 0.0757 0.0193 0.0371 0.6459 0.0243 1.1906 0.0917 nd nd 4.0186 0.0371 0.0000 0.0193 0.0535 0.6136 0.3329 64.8 LR-11 m9 rim 2 50.81 0.31 0.71 20.48 0.76 22.62 2.11 nd nd 97.80 1.9407 0.0089 0.0320 0.0000 0.0142 0.6401 0.0246 1.2876 0.0864 nd nd 4.0344 0.0142 0.0000 0.0000 0.0291 0.6485 0.3224 66.8 LR-11 mio gm 24 49.36 0.32 0.75 24.07 0.81 17.77 4.09 nd nd 97.17 1.9457 0.0095 0.0349 0.0000 0.0159 0.7776 0.0270 1.0439 0.1728 nd nd 4.0273 0.0159 0.0000 0.0000 0.0813 0.5265 0.3922 57.3 LR-12n 01-931 rim 4003 51.71 0.45 0.65 23.49 0.80 17.51 4.41 0.02 0.02 99.06 1.9834 0.0130 0.0166 0.0128 0.0000 0.7535 0.0260 1.0009 0.1812 0.0006 0.0006 3.9886 0.0000 0.0006 0.0128 0.1161 0.5043 0.3796 57.1 LR-12n D1-931 rim 4004 52.04 0.34 0.63 23.69 0.83 18.38 3.73 0.02 0.01 99.67 1.9807 0.0097 0.0193 0.0090 0.0000 0.7541 0.0268 1.0426 0.1521 0.0006 0.0003 3.9952 0.0000 0.0003 0.0090 0.0970 0.5240 0.3790 58.0 pig 1 LR-12n D1-931 ol rim 2065 52.07 0.27 0.82 22.40 0.83 18.01 5.16 0.00 0.00 99.56 1.9798 0.0077 0.0202 0.0166 0.0000 0.7123 0.0267 1.0205 0.2102 0.0000 0.0000 3.9941 0.0000 0.0000 0.0166 0.1253 0.5152 0.3596 58.9 Mc-18 m30 gm 4 52.94 0.38 0.77 17.12 0.69 22.87 4.75 nd nd 99.52 1.9621 0.0106 0.0336 0.0000 0.0125 0.5182 0.0217 1.2632 0.1886 nd nd 4.0105 0.0125 0.0000 0.0000 0.1031 0.6360 0.2609 70.9 Mc-18 m30 18 53.17 0.25 0.56 18.57 0.73 23.23 3.36 99.87 . 1.9683 0.0070 0.0244 0.0000 0.0105 0.5644 0.0229 1.2816 - 0.1333 4.0125 0.0105 0.0000 0.0000 0.0717 0.6445 0.2838 69.4 50.98 0.03 0.21 32.82 0.08 13.18 2.80 nd 100.10 2.0053 0.0009 0.0000 0.0097 0.0000 1.0797 0.0026 0.7726 0.1180 3.9889 0.0000 0.0000 0.0097 0.0690 0.3884 0.5427 41.7 Md-04 gm 53.44 0.28 0.85 18.47 0.60 22.52 4.19 100.35 1.9694 0.0078 0.0306 0.0063 0.0088 0.5605 0.0187 1.2368 0.1655 4.0044 0.0088 0.0000 0.0063 0.0938 0.6236 0.2826 68.8 uw Heed wiodt aaFQIIRYS 100.06 1.9530 0.0103 0.0365 0.0000 0.0160 0.5294 0.0222 1.3106 0.1405 4.0185 0.0160 0.0000 0.0000 0.0720 0.6610 0.2670 71.2 Me-03 m36 20 52.66 0.29 0.78 17.62 0.62 22.66 4.31 nd nd 98.94 1.9651 0.0081 0.0343 0.0000 0.0180 0.5319 0.0196 1.2602 0.1723 4.0096 0.0180 0.0000 0.0000 0.0949 0.6365 0.2686 70.3 Me-03 m36 gm 22 52.66 0.32 0.96 17.83 0.51 24.33 2.87 nd nd 99.48 1.9482 0.0089 0.0419 0.0000 0.0241 0.5276 0.0160 1.3415 0.1138 nd nd 4.0219 0.0241 0.0000 0.0000 0.0534 0.6794 0.2672 71.8 15-May-85 6°69 27s9 6°69 #8w 2282°0 = S%7E"0 =: O¥L2°0 Sd 6999°0 = BL6S°0 = SZE9°0 uz SS70°0 §=9£90°0 = S880°0 on 0000°0 0000°0 s¥00°0 sledv 0000°0 0000°0 0000°0 segs 2120°0 }=%¥L0"O §=£200°0 $1994 2920°% 0S20° 2£00°4 303 pu pu pu 49 pu pu pu IN 0260°0 8L¥L"O Z28S1L°0 eg 9BLE"L SPLb°L 299271 5W 0220°0 + 9120°0 9510°0 UW 889S°0 8£89°0 S%”S"0 +294 2120°O0 =7L0°0 §= £2000 +994 0000°0 0000°0 <s¥00°0 ow 6270°0 + 8220°0 9920°0 71 9010°0 2900°0 ¥900°0 th C£96"L = 77S6"L = S26" {s suaBAxo 9 sad swoje 92°66 29°26 20°001 302 pu pu pu £0249 pu pu pu OIN 97°2 2g 20°97 oe) se" ee 27°02 20°¢2 o6W 02°0 99°0 os*0 OuW £0°6L £9" L2 L6°2L 024 86°0 19°0 29°0 £021 gc"0 £2°0 £2°0 2otl ge"2s 99° 0S 29° Es 20!s Saplxo %3M £b se £2 as02 wb w6 oew Ou gu bb-Od 20-20 £0-2W Su01}1Sodwod a3 1uoabid uLysnyeW Makushin magnetite/spinel compositions - ulvospinel basis LR-02 LR-02 LR-02 LR-02 LR-06a_ LR-06a M1-01 M1-01 PC-06 PC-06 PC-06 PC-06 PC-06 PC-06 PC-06 83mn65 — 83mn65 = 83mn65 — B3mn65—-B3mM52.—- B32 83mn41—-B3mn41_—- B3mn86 83mn86 = 83mn86- 83mnB6 = B3mn86— 83mNB6 5018 5019 5020 5021 5119 5120 5018 5019 5054 5055 5041 5042 5043 5044 5045 i sio2 0.15 0.18 0.16 0.15 0.12 0.10 0.10 0.14 0.17 0.20 0.09 0.05 0.11 0.10 0.15 Tio2 0.72 12.31 12.83 0.75 12.97 13.10 17.73 17.54 6.55 3.64 1.19 1.17 0.53 0.66 7.71 A203 8.24 3.50 2.88 7.55 2.89 2.57 2.87 2.75 4.31 3.34 15.44 14.64 8.33 12.05 3.71 Fe203 50.29 40.74 40.83 39.69 40.77 40.96 32.70 32.51 49.58 56.90 30.57 31.40 33.74 45.20 50.08 FeO 26.80 38.94 40.11 23.70 39.68 40.03 42.82 43.52 29.33 27.23 14.27 15.57 17.92 13.20 33.15 MnO 0.33 0.38 0.45 0.30 0.41 0.44 0.57 0.63 0.40 0.63 0.14 0.26 0.34 0.33 0.40 MgO 3.05 2.24 1.82 3.66 2.19 1.99 3.08 2.37 5.03 3.79 10.74 9.78 6.54 11.12 3.14 Cao 0.01 0.08 0.06 0.00 0.02 0.04 0.00 0.07 0.02 0.55 0.01 0.00 0.02 0.51 0.21 cr203 10.47 0.17 0.06 23.83 0.07 0.09 0.06 0.04 4.99 1.40 27.76 27.86 32.43 15.81 0.16 NiO 0.09 0.01 0.02 0.07 0.00 0.02 0.01 0.01 0.05 0.09 0.11 0.15 0.04 0.24 0.05 tot 100.15 98.54 99.21 99.71 99.12 99.34 99.94 99.58 100.43 97.76 100.32 100.89 100.00 99.22 98.76 FeO meas. 72.05 75.59 76.84 59.42 76.36 76.88 72.24 72.77 73.94 78.42 41.78 43.83 48.28 53.87 78.21 atoms per 4 oxygens Si 0.0056 0.0067 0.0060 0.0060 0.0045 0.0037 0.0036 0.0051 0.0062 0.0075 0.0033 0.0019 0.0045 0.0036 0.0056 Ti 0.0204 0.3446 =0.3589 0.0227 0.3622 «0.3662 0.4858 90.4850 0.1805 0.1029 0.0330 0.0327 0.0162 0.0178 0.2146 Al 0.3657 0.1536 90.1263 0.3585. 0.1265 0.1126 90.1233. 0.1192 0.1862 0.1480 0.6717 0.6413 0.4003 0.5095 = :0. 1619 Fe3+ = 1.4248 1.1410 1.1427 1.2032. 1.1391 1.1457 0.8966 90.8996» 1.3671 1.6089 0.8490 0.8781 1.0350 1.2199 1.3946 Fe2+ 0.8437 1.2121 1.2475 0.7985 = 1.2320. 1.2444 = 1.3048 9=1.3381 0.8988 ~=—0.8557 0.4404 0.4839 0.6108 0.3960 1.0261 Mn 0.0105 0.0120 0.0142 0.0102 0.0129 0.0139 0.0176 0.0196 0.0124 0.0201 0.0044 0.0082 0.0117 0.0100 0.0125 Mg 0.1711 0.1243 0.1009 0.2197 0.1212 0.1102 0.1672, 0.1299 0.2747 0.2122 0.5906 90.5415 0.3973 «0.5944 = 0.1732 Ca 0.0004 0.0032 0.0024 0.0000 0.0008 0.0016 0.0000 0.0028 0.0008 0.0221 0.0004 0.0000 0.0009 0.0196 0.0083 Cr 0.1558 0.0025 0.0009 0.3794 0.0010 0.0013 0.0009 0.0006 0.0723 0.0208 0.4049 0.4092 0.5225 0.2241 0.0023 Ni 0.0027 0.0003 0.0006 0.0023 0.0000 0.0006 0.0003 0.0003 0.0015 0.0027 0.0033 0.0045 0.0013 0.0069 0.0015 total 3.0008 3.0002 3.0002 3.0007 3.0001 3.0002 3.0001 3.0001 3.0005 3.0008 3.0009 3.0012 3.0004 3.0018 3.0005 mol % usp 2.77 37.62 38.55 3.62 38.84 38.97 51.97 51.85 20.86 11.33 7.14 6.86 3.02 2.82 23.51 Mg# 16.86 9.30 7.48 21.58 8.95 8.14 11.36 8.85 23.41 19.87 57.29 52.81 39.41 60.02 14.44 Cr/Cr+Al 29.87 1.60 0.69 51.42 0.81 1.16 0.70 0.49 27.96 12.32 37.61 38.95 56.62 30.55 1.43 YFe 73.21 87.97 89.99 61.98 89.93 90.95 87.84 88.25 84.10 90.51 44.09 45.53 52.87 62.45 89.47 yYcr 8.00 0.19 0.07 19.55 0.08 0.10 0.08 0.06 4.45 1.17 21.03 21.22 26.69 11.47 0.15 YAL 18.79 11.84 9.94 18.47 9.99 8.94 12.08 11.69 11.45 8.32 34.88 33.25 20.45 26.08 10.38 mt/sp 1 15-May-85 Makushin magnetite/spinel compositions - PC-06 PC-06 PC-06 PC-06 83mn86 = 83mn86_ = 83mn8B6 = 83mnB6 5046 5047 5048 5049 sio2 0.18 0.09 0.51 0.08 Tio2 7.38 0.63 1.02 0.55 Al203 4.00 12.43 15.08 11.89 Fe203 50.63 22.48 23.17 23.13 Fed 31.54 10.20 11.79 11.11 MnO 0.40 0.24 0.25 0.15 MgO 4.18 11.32 11.50 10.53 CaO 0.05 0.01 0.06 0.00 cr203 0.60 44.02 35.98 42.53 NiO 0.06 0.05 0.14 0.11 tot 99.01 101.47 99.50 100.08 FeO meas. 77.09 30.43 32.64 31.92 atoms per 4 oxygens Si 0.0066 0.0036 0.0196 0.0032 Ti 0.2035 0.0189 0.0295 0.0168 Ai 0.1729 0.5847 0.6831 0.5690 Fe3+ 1.3970 0.6750 0.6700 0.7066 Fe2+ 0.9672 0.3405 0.3790 0.3771 Mn 0.0124 0.0081 0.0081 0.0052 Mg 0.2284 0.6732 0.6586 0.6370 Ca 0.0020 0.0004 0.0025 0.0000 Cr 0.0087 0.6943 0.5465 0.6824 Ni 0.0018 0.0016 0.0043 0.0036 total 3.0006 3.0005 3.0011 3.0010 mol % usp 22.54 5.21 7.96 4.46 Mg# 19.11 66.41 63.47 62.81 Cr/Cr+Al 4.79 54.28 44.44 54.53 YFe 88.50 34.54 35.27 36.09 Ycr 0.55 35.53 28.77 34.85 YAL 10.95 29.92 35.96 29.06 ulvospinel basis PC-06 83mn86 5050 0.07 0.88 13.04 25.60 13.44 0.20 9.87 0.00 37.07 0.09 100.26 36.47 0.0028 0.0261 0.6053 0.7586 0.4424 0.0067 0.5792 0.0000 0.5770 0.0029 3.0008 6.34 56.69 48.80 39.08 29.73 31.19 PC-06 83mn86 5051 0.08 0.62 12.08 23.81 12.20 0.16 9.94 0.02 40.47 0.08 99.47 33.63 0.0032 0.0189 0.5779 0.7272 0.4142 0.0055 0.6011 0.0009 0.6491 0.0026 3.0007 4.87 59.21 52.90 37.21 33.22 29.57 PC-06 83mn86 5052 0.10 0.20 9.30 22.29 9.95 0.22 10.25 0.02 47.73 0.06 100.12 30.01 0.0042 0.0064 0.4652 0.7118 0.3533 0.0079 0.6482 0.0009 0.8006 0.0020 3.0006 1.73 64.73 63.25 35.99 40.48 23.53 PC-06 83mn86 5053 0.17 2.52 7.11 52.59 27.32 0.36 3.89 0.04 4.43 0.06 98.49 74.64 0.0063 0.0704 0.3112 1.4693 0.8484 0.0113 0.2152 0.0016 0.0650 0.0018 3.0006 8.72 20.24 17.28 79.61 3.52 16.86 mt/sp 2 0.0014 3.0004 2.58 64.12 68.38 34.44 44.84 20.73 PC-09 83mn25 5016 0.15 7.39 3.89 50.19 30.25 0.39 4.80 0.07 1.28 0.00 98.41 75.41 0.0055 0.2048 0.1690 1.3916 0.9321 0.0122 0.2636 0.0028 0.0186 0.0000 3.0001 22.71 22.04 9.94 88.12 1.18 10.70 PC-09 83mn25 5017 0.07 0.35 10.60 20.33 7.51 0.16 12.13 0.00 50.23 0.08 101.46 25.80 “0.0029 0.0109 0.5169 0.6327 0.2599 0.0056 0.7478 0.0000 0.8213 0.0027 3.0007 3.26 74.21 61.37 32.10 41.67 26.23 PC-09 83mn25 5017 0.03 0.45 11.83 19.25 7.12 0.04 12.57 0.04 49.61 0.14 101.08 24.44 0.0012 0.0139 0.5711 0.5933 0.2438 0.0014 0.7671 0.0018 0.8030 0.0046 3.0012 4.37 75.88 58.44 30.15 40.82 29.03 PC-09 83mn25 5001 0.12 0.32 8.93 22.45 11.00 0.27 9.66 0.03 47.67 0.05 100.50 31.20 0.0051 0.0102 0.4479 0.7187 0.3915 0.0097 0.6125 0.0014 0.8017 0.0017 3.0005 2.72 61.01 64.16 36.51 40.73 22.76 PC-09 83mn25 5002 0.07 0.37 10.38 18.45 6.83 0.17 12.29 0.03 52.84 0.13 101.56 23.43 0.0029 0.0117 0.5125 0.5814 0.2392 0.0060 0.7670 0.0013 0.8747 0.0044 3.0011 3.77 76.23 63.06 29.53 44.43 26.03 15-May-85 Makushin magnetite/spinel compositions PC-09 PC-09 83mn25 = 83mn25 5003 5004 sio2 0.06 = 0.15 Tio2 0.30 (0.97 Al203. «9.27 16.04 Fe203 20.13 20.42 Feo 9.25849 Mn0 0.21 0.15 MgO 10.54 13.19 Cad (0.03 S003 cr203 50.77 40.56 NiO —-0.06~Ss«(0.08 tot 100.62 100.08 FeO meas. 27.36 26.86 atoms per 4 oxygens Si 0.0026 0.0058 Ti 0.0097 0.0280 Al 0.4676 0.7259 Fe3+ 0.6482 0.5898 Fe2+ 0.3308 0.2726 Mn 0.0076 0.0049 Mg 0.6721 0.7546 Ca 0.0014 0.0012 Cr 0.8586 = 0.6154 Ni 0.0021 0.0025 total 3.0006 3.0007 mol % usp 2.84 8.50 Mg# 67.01 73.46 Cr/Cr+al 64.74 45.88 YFe 32.83 30.54 Ycr 43.49 31.87 YAL 23.68 37.59 PC-09 83mn25 5005 0.11 0.23 7.57 22.89 11.93 0.32 8.67 0.02 48.29 0.07 100.09 32.52 0.0048 0.0075 0.3894 0.7516 0.4353 0.0118 0.5638 0.0009 0.8330 0.0025 3.0007 1.94 56.43 68.14 38.07 42.20 19.73 PC-09 83mn25 5006 0.15 7.54 3.95 49.72 30.74 0.42 4.48 0.13 0.97 0.05 98.15 75.48 0.0055 0.2095 0.1721 1.3826 0.9500 0.0131 0.2467 0.0051 0.0142 0.0015 3.0005 23.24 20.62 7.61 88.13 0.90 10.97 =n— —=ODOWODNOCSO w SLaASSARRRRAS St- 0.0039 0.0225 0.5884 0.8721 0.4484 0.0085 0.5686 0.0000 0.4846 0.0041 3.0011 4.85 55.91 45.16 44.83 24.92 30.25 ulvospinel basis PC-09 83mn25 5008 0.08 0.91 13.94 30.10 15.14 0.24 9.57 0.00 30.60 0.09 100.67 42.22 0.0030 0.0259 0.6231 0.8588 0.4800 0.0077 0.5408 0.0000 0.4586 0.0027 3.0008 5.63 52.97 42.40 44.26 23.63 32.11 PC-09 83mn25 5009 0.05 1.08 15.39 30.53 13.89 0.25 10.75 0.00 28.14 0.07 100.15 41.36 0.0019 0.0301 0.6720 0.8509 0.4304 0.0078 0.5934 0.0000 0.4120 0.0021 3.0006 6.53 57.96 38.01 43.98 21.29 34.73 PC-09 83mn25 5010 0.10 1.10 14.71 . 31.30 13.85 0.25 10.69 0.02 27.52 0.14 99.69 42.02 0.0037 0.0308 0.6460 0.8775 0.4316 0.0079 0.5934 0.0008 0.4052 0.0042 3.0011 6.49 57.90 38.55 45.50 21.01 33.49 PC-09 83mn25 5011 0.17 1.42 10.32 53.37 22.50 0.40 6.43 0.48 3.05 0.14 98.28 70.52 0.0061 0.0381 0.4340 1.4325 0.6713 0.0121 0.3418 0.0183 0.0430 0.0040 3.0011 5.03 33.74 9.02 75.02 2.25 22.73 TT-10 83mn77 5119 0.10 6.08 6.72 50.36 30.23 0.34 4.54 0.03 0.50 0.03 98.93 75.54 0.0036 0.1651 0.2861 1.3686 0.9130 0.0104 0.2443 0.0012 0.0071 0.0009 3.0003 19.41 21.11 2.43 82.35 0.43 17.22 TT-10 83mn77 5120 0.12 8.56 5.74 46.86 33.32 0.39 4.04 0.01 0.44 0.00 99.49 75.49 0.0043 0.2327 0.2446 1.2748 1.0074 0.0119 0.2176 0.0004 0.0063 0.0000 3.0001 26.71 17.77 2.51 83.56 0.41 16.03 Appendix 4 - Silica Variation Diagrams Silica variation diagrams for most analysed elements follow. Symbols are as follows: Stars - late Holocene Makushin Volcano (M1 series) crosses - middle and early Holocene Makushin Volcano (M2, M3 and M4 series) Small _ pluses - Pleistocene QTvc (M5, Mc, Md, Me, Mf, Mg and Mh series) triangles - Lava Ramp (LR) inverted triangles - Sugarloaf (SL) hexagons - Pakushin Cone (PC) Squares - Point Kadin Vents ( PK) upright diamonds - Table Top Mountain (TT) Sideways diamonds - Wide Bay Cone (WB). 7 ~~ poe po Oc’ + _ 50.0 65.0 .O 60 .0 55 S102 Ale203 18.0 22.0 .0 20 0 14.0 16. —_ T | a ns ens nae o oO : 9 0 Y : oO 0,% > xo V axes 7 * + + * ca eg ++ ti att w . ss * Ax on 3 x +y ¥ o xX + KK HE x x x +t x + oO oO = | eee _ LL 50.0 55 60.0 65.0 a2 65.0 50.0 um 8 00°8 OO°L 00°9 00° 4084 .0 60 rhe 55.0 MgO 10.0 .00 8 6.00 4.00 2.00 - ~ a] | 7 “T — + Oo, + = = + $5 > Sat pe qt + + 0 4 9 - ? o, * + x oXp e+ ot + x xX 4 +t + + be Oo XO gk Axx ax 2 ie + OO o* A xX oy x © A” xf ’ x + [- + x xX x, x oa | L | . Lye 50.0 55.0 60.0 65.0 TTT + | | ~ x 7 | x OK | i x Fy { 2k 7 | ° * + t - a3 | X ask OF x< | 4 | $f, | “gf = * — | .. *G i ¢ + * Sokx + > & + +4+ oo x x i 1 ++ = KS LL ey + oC — ogee ™ + eet, | @ wh, > | _| | | eee “ev 0° OT 00°8 00°39 00°F .0 50 o10P OcEN | | x i _ | x * * * x * x i | * | | x + | + *K Le + = { | Oo Ko x | Kk OF x. tq %* | x x i 4 a < 45 7 - ° xs ** = o RE... x + x . + 1 | 2 S& ie | ' +B + | +X x 7 + | C&O x + + oO + 7 fa ’ = o =f ! ‘ "+ gooe | oot +> 4 L | | | 00°S 0O0'Y 00° 00° 65.0 .0 60 .0 55 .0 50 2 Si02 65.0 .0 55 .0 50 “0 S102 Rb 50.0 40.0 30.0 20.0 10.0 5102 Per ey Vi ee Pe ia | my wT eT TT Hi Pet ry Vine) TTT ary en) oe % * * fi iil % k iL + A a ail ++ A OA *& + | i { + mM eal Me { + Ani \ +k i + | ++ - om 4 oO + Oo OF + ++ Vo * ! + + A we + + t wi UL alll PU | WINES 50.0 55.0 60.0 65.0 apo 00S rm oo 00r eG we OOE | 65.0 Ls 60.0 55.0 50.0 00¢ S102 = I = | {2 I + x ° a 6 | wo : x | i x | ¥ | Oo i Ho | wo BK <i | é << <i <l * o * ' . t Z 65 | & +tt VP oO u 45,2 | ° & - = OW i z + | Oo + | + o ° eu + “xX = , = o | : in | + > t | .+ @& 7 t | L He L 34: | A 008 0OL 009 00S O07 COE 002 ds 5102 T 7 T “Ty —|— | | L 2 } ( i | } | | | 4 oO x 1 4 | | 1 | < i 1 * = } + + 4 ! i + i + | + ' * | | : | a | + | | L a zi | I als 0°SE 0°0€ 0°S2 0°02 0°ST 30 65.0 .0 60 55.0 .0 50 a10e 50.0 40.0 30.0 0 20 Perret evant : RRP aE rte x ¥ ie A % ar + A AA + A + + A ~ + + +A + A wy + Lm. x | oo % + + + QO + + + + + © nL _ al I a 50.0 55.0 60. 65.0 ZP 200 150 100 50.0 ee a \ x * ¥ : x | 6 | A { + A | + 4 at | ¢ A | 7 0d | w¢ - Or % } ve a aya 1 | L 1 50.0 55.0 60.0 65.0 65.0 .0 60 55.0 20 50 [ I =I T : 4 k k * + i 4 *K ye 0 * ok + < ase q < ! +tt 4 < _ = qd 7 + <A, + + i + * rea ig? oS. 0 + + o o os x 8 4 i + > + >* L<“so | L | 00°8 00's 00° 00° e 502 300 250 200 150 100 65.0 Cr 150 100 50.0 0.0 ic A TT 1 mie id TT + » y A A 2 * i ji a Ha 50. 55.0 60.0 65.0 0°Or TN 65.0 .0 60 55.0 .0 50 5102 54°00° 53°45" Cape Kovrizhka ALASKA DIVISION OF GEOLOGICAL & | REPORT OF INVESTIGATIONS GEOPHYSICAL SURVEYS | PLATE 7 OF 7. 0 ™ = - kid 166°30° ‘ ——— — ~ mo Cape Cheerful Cape Wislow cw-01 Reese Bay ° F *54°O0' Point Tebenkof McLees e Driftwood Bay OTve cake: — Me-11a-11b Bishop Point S ~~ ~ Bering Sea _Me-18° @ Mc 09 Qu e Mc-08 ° Me-13, Mc-06 d-14 me-06 c-O7e7, @ Mc-05 . j i e Koriga Point ade Md-04 3 Q Wide Bay Cone md\i6 \ ‘Md-10 WB OS ° We.o2 4-50 ewB-05 Me-01 ° we.04 “G02 Eider Point Tu 9 VB-06 Qhv Sa a Wide Bay ve ee O.~ Tu o ‘Driftwood Valley Point Kadin LR.03 E Ca Tu Tu 2 LR-05 * ‘ Te Broad Bay Sugarloaf Cone Qu Makushin Valley \ Tu M1-13b . Qu i : M3-13a13c anv “ Hog Island aTve ae Amaknak Island R-09 e LR-08 e LR-13 ol LR-06 LR-06f ahv LR: LR-06c QL R-12a-12n ifoz Lose 1-51b -51d Makushin Volcano -! -62d M2-52a -5 Baer Harbor Dutch Harbor Tu é) Mg-01 ‘ > 3 Tu Qu 3 M2-53 Unalaska LO Unalaska Lake : Tu Mf-04 -05 S : a Nateekin River ae vc Mf-03 : e - . . Qu Mf-16 Nateekin River e es 53°50" aTve Pakushin Cone Port Levashef Tu Tu: Volcano Bay | 50° y ee 166°30° Correlation of Map Units \ SCALE 1:50,000 ALASKA | \ ° 1 2 3 Miles Sr oludy, (8 a . 5 Qo 1 2 23 60 ; ee, Se a Glacier Valley Qhv 3 rr! Vena. oem é = B MAP UNITS Map Symbcls a ud lotve S Qu Quaternary alluvium and colluvium, undifferentiated s e@ Sample location UNALASKA ISLAND 3 Qvp Valley filling pyroclastic deposits A 14¢ Sample location : O K-Ar Sample location MI-MS Qhvy = HOMOGENEOUS VOLCANICS (Nye and others, 1984) - Basalt and andesite flows and pyroclastic debris that result from relatively brief homogeneous, voluminous a) eruptions characteristic of monogenic flank vents. Tu : Unalaska x Makushin Volcano i Makushin OTve INHOMOGENEOUS VOLCANICS (Nye and others, 1984) - Basalt, andesite and Nateekin | s_ dacite flows and pyroclastic debris of variable composition erupted by sporadic 15°39 c g relatively small volume eruptions characteristic of polygenetic stratacones. Rushin Volcano o Oo = Tu UNALASKA FORMATION (Drewes and others, 1961) - Volcanoclastic rocks, = y dikes and sills, lava flows and minor sedimentary rocks. = a Tu 2 Makushin Bay Ta Tg GABBRONORITE (Nye and others, 1984) - Medium-grained equigranular to FS porphyritic unzoned two pyroxene gabbro stock. » Makushin Point approximate mean declination (1951 ) Makushin Bay oe SAMPLE LOCATIONS OF YOUNG VOLCANIC ROCKS AND GENERALIZED GEOLOGY OF THE MAKUSHIN VOLCANO AREA, ALASKA geology from Drewes and others, 1961, and Nye and others, 1984