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| Press Ltd. Printed in Northern Ireland The Khor Temiki meteorite M. H. HEY and A. J. EASTON Department of...is revised form 14 June 1967) &&r&-The K&or Temiki meteorite is en aubrite, containing metal both in smell...near the wadi Khor Temiki (=Khawr Temiki, 16’6’N, 36”23’E), in the Gash delta, Kassala, Sudsn. Several...of dust and small fragments, many of which are enstatite crystals. The few sizeeble pieces show no veining...the matrix is pure white, while the numerous enstatite cry&l frs,gments, about 50 o/oof the whole, are |
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| large number of individual enstatite crystals of the gas-rich aubrites Khor Temiki, Staroe Pesyanoe and Bustee...aubrites investigated. Statistically in a given meteorite the proportion of crystals with implanted solar... i cm Fig. 1. Photograph of Khor Temiki "normal" (top) and Khor Temiki "extra dark" (bottom). Also,...have chosen to investigate the aubrites Bustee, Khor Temiki and Staroe Pesyanoe, since these are the ones...Brecciated aubrites are composed of white to grey enstatite phenocrysts (mm to cm) dispersed in a grey matrix |
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| schreibersite and perryite of enstatite achondrites and the origin of enstatite chondrites and achondrites*...associated schreibersite and perryite of eight enstatite achondrites shows that the compositions of these...phases are relatively constant within a given meteorite, but show substantial variations between meteorites...An examination of the properties of both the enstatite chondrites and achondrites indicates that these...composition. A model for the formation of the enstatite chondrites and achondrites is proposed. INTRODUCTION |
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| Electron Petrography of Shock Effects in a Gas-Rich Enstatite-Achondrite J. 1%. A s h w o r t h a n d D. J....Received November 8, 1974 Abstract. The enstatite-achondrite Khor Temiki has been studied by high-voltage electron...electron microscopy. The "normal" Khor Temiki lithology has a fine-grained matrix in which individual...environment similar to that of the lunar regolith. The meteorite is traversed by veins of "extra-dark" material...almost completely. Instead of the enstatite that dominates the bulk meteorite, optically twinned clinoenstatite |
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| POSSIBLE SOLAR PRIMORDIAL HYDROGEN IN THE PESYANOE METEORITE Harry C. LORD III * Jet Propulsion Laboratory...temperatures, T < 7OO”C,were detected in the Pesyanoe meteorite by gas chromatographic analysis. The hydrogen...separated minerals, and grain sizes in the Khor Temiki meteorite, an aubrite. They discovered that upon etching...87.2 mg sample of the rare-gas-rich Pesyanoe meteorite (an aubrite) was heated, in vacuum, in 100” steps...Evolved gas (cc STP/g) He H2 He/H ___Pesyanoe meteorite This work Z&ringer [ 71 (1.0 +0.2) x IO-2 0 |
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| Abstract–Several aubrites (e.g., LAP 03719, Bishopville, Khor Temiki, ALH 83015) contain orthopyroxene grains that...stage S2), as in Bishopville and ALH 83015. The Khor Temiki regolith breccia contains S1 and S2 olivine grains...annealed to S1. INTRODUCTION Although a few enstatite achondrites (aubrites) appear unbrecciated (e...breccias. Several aubrites (Bustee, EET 90033, Khor Temiki, LAR 04316, LEW 87007, Pesyanoe, and Y-793592)...et al. (1997) for ordinary, carbonaceous, and enstatite chondrites, it is clear that aubrite whole rocks |
 | BURBINE, Thomas H., McCOY, Timothy J., NITTLER, Larry R., BENEDIX, Gretchen K., CLOUTIS, Edward A., Dickinson, Tamara L. (2002) Spectra of extremely reduced assemblages: Implications for Mercury. Meteoritics & Planetary Science, 37 (9) 1233-1244 doi:10.1111/j.1945-5100.2002.tb00892.x | Journal (article/letter/editorial) |
| easily distinguish between a lunar highlands and enstatite basalt composition since these materials have...strongest argument against Mercury having an enstatite basalt composition is its extreme spectral redness...1300-1400 K), possibly similar to the enstatite chondrites. Enstatite chondrites are composed (e.g., Keil...Keil, 1968) primarily of enstatite, metal, sulfides, and plagioclase. This precursor material would then...Mercury's density is much higher than that of enstatite chondrites (about 3.4-3.7 g/cms) (Consolmagno |
 | Lorenzetti, S., Eugster, O., Busemann, H., Marti, K., Burbine, T.H., McCoy, T. (2003) History and origin of aubrites. Geochimica et Cosmochimica Acta, 67 (3) 557-571 doi:10.1016/s0016-7037(02)01085-2 | Journal (article/letter/editorial) |
| were observed in stepped-heating studies of the enstatite chondrite Abee (Wacker, 1982). The cosmic ray...age of Norton County, the first measured stony meteorite (Begemann et al., 1957), yields the longest currently...currently known exposure time of a stone meteorite. Gaffey et al. (1992) suggested a link between aubrites...and Anders (1981) found that exposure ages of enstatite meteorites show a trend, E4 ⬍ E6 ⬍ aubrites, while...occurrence of SW-containing meteorites among the enstatite achondrites is a major reason for a detailed examination |
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| Testing an integrated chronology: I-Xe analysis of enstatite meteorites and a eucrite A. BUSFIELD, G. TURNER...concentrates of four enstatite meteorites and a eucrite. In the case of the enstatite meteorites the inferred...(EL6, −4.22 ± 0.67 Ma), Khor Temiki (aubrite, −0.06 Ma), and Itqiy (enstatite achondrite, −2.6 ± 2.6 Ma)...evolved concordantly in the early solar system. The enstatite chondrites are offset from the linear array described...et al. 1992) and the Mn-Cr/I-Xe ages for this meteorite. Understanding the reason for this apparent inconsistency |
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| of the elements, e.g. silicon in the metal of enstatite chondrites will appear as the oxide). MINERAL...metallographic study of the Angra dos Reis (iron) meteorite. Mineral. Mag. 38,94-101. Axon, H.J. and C.V....exceptionally large chondrule in the Parnallee meteorite. Mineral Mag. 36,319-323. Binns, R.A., 1968. Cognate...inclusion of unique type in Cumberland Falls meteorite. In Meteorite Research, P.M. Millman, ed., D. Reidel... 1966. A potassium-argon age for the Barwell meteorite. Nature 210,620. Graham, A.L., AJ. Easton, R. |
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| and sulfides in enstatite achondrites record planetary differentiation in an enstatite chondritic parent...aubrites are either similar to those in metal from enstatite chondrites, or can be derived by crystallization...with solid metal/liquid metal differentiation of enstatite chondrite-like metal. Metals from chondrite inclusions...result is consistent with a genetic link between enstatite chondrites and aubrites, but as to whether aubrites...aubrites were derived from the same body(ies) as enstatite chondrites, or have their origin in multiple, |
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| for L Group chondrites, and Ab,,An,,Or, for Enstatite chondrites. The compositional clusters for these...e 3.9 e 280 e 430 0 860 h 1030 g 960 f D. Enstatite 3.6 e 4.4 f 44g 44f ohondrite Hvittia E. Other...feldspar from the granular matrix. The Khor Tern&i enstatite achondrite has been described recently by...as an extremely friable meteorite consisting of angular fragments of enstatite embedded in a granular...granular, fine-grained matrix of predominant enstatite with diopside, feldspar, forsterite, sulfides, and metal |
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| by the solar wind, which was accreted by the meteorite parent bodies and then incorporated in a breccia...mesh) Jodzie L (light) Kapoeta, dark He4 He3 Meteorite Table 1. Rare Gases in Jodzie, Kapoeta, and Alais...included, as an example of another type of gas-rich meteorite. The resemblance of Jodzie Dla to the most gas-rich...ages Cosmogenic gas content (10-s co STP/g) Meteorite Jodzie-L K&poets.-L Exposure age (m-y. I+ He3...wind ions by dust grains on the smface of the meteorite parent body ( SUESSetd., 1964; HIXTENBERBER et |
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| homepage: www.elsevier.de/chemer INVITED REVIEW Enstatite achondrite meteorites (aubrites) and the histories...nearly monomineralic enstatite pyroxenites, consisting mostly of nearly FeO-free enstatite, with minor albitic...isotopic compositions suggest close kinship to the enstatite chondrites. However, they did not form from known...their parent bodies. Rather, they formed from enstatite chondrite-like material on at least two separate...the melting and fractional crystallization of enstatite chondritelike parent lithologies, which should |
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| © Meteoritical Society, 1989. Printed in USA Enstatite meteorites and their parent bodies* KLAUS KEIL...Abstract-Enstatite meteorites are highly reduced rocks that consist of major, nearly FeO-free enstatite, variable...bodies. 2. Aubrites were not derived from known enstatite chondrites on the same parent bodies. Aubrites...Aubrites represent samples from a third enstatite meteorite parent body. 3. The aubrite parent body may have...aubrite source material (parent body) was probably enstatite chondrite-like in composition, but had a higher |
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| ordinary ehondrites lle between 1 a n d 3 a n d all enstatite ehondrites have ratios between 3 a n d 7. I f...sample was performed only after about every 5 meteorite rtms since it was found that during normal operation...Samples In this work 2 carbonaceous ehondrites, 3 enstatite chondrites, 32 bronzite ehondrites, 32 hypersthene...donors are given below: AML ASU BMNH American Meteorite Laboratory Arizona State University British Museum...(1967}. Their abbreviations s t a n d behind the meteorite names. The n u m b e r following the classification |
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| de/chemer Invited Review Impact features of enstatite-rich meteorites Alan E. Rubin ∗ Institute of Geophysics...Editorial handling - Klaus Keil Keywords: Enstatite chondrites Enstatite achondrites Aubrites Shock effects...Asteroidal parent bodies Meteorite breccias Impact melting Sinoite a b s t r a c t Enstatite-rich meteorites...include EH and EL chondrites, rare ungrouped enstatite chondrites, aubrites, a few metal-rich meteorites...partial-melt residues ultimately derived from enstatite chondrites. Members of these sets of rocks exhibit |
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| sulfides (FeS, CaS) and silicate and applications to enstatite achondrites K. LODDERS Planetary Chemistry Laboratory...coefficients indicate that CaS (oldhamite) in enstatite achondrites (aubrites) cannot have gained its...tool to the highly reduced and differentiated enstatite achondrites (aubrites), the REE distribution in...(ideal formula, CaS) is the main REE carrier in enstatite meteorites (e.g., Larimer and Ganapathy, 1987;...similar in composition to the silicate portion of enstatite chondrites (Table 2). Appro- K. Lodders 750 |
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| in Allende pentlandite relative to the whole meteorite. The Tl-%Pb abundance diagram is described near...the origin and the Orgueil and Murchison whole meteorite data. The deviation of magnetic matrix fractions...and U-Th-Pb data on Allende is that the parent meteorite body sufsystems and in nucleosynthesis it is probably...samples, together with minor amounts of nepheline, enstatite and sodalite. Acid-etched carbon residues. Bulk...extraction b) HNO, extraction Whole . . W.M. W.M. meteorite 2 3 Orgueil W.M. Murchison W.M. Toluca troilite |
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| singled out in our discussion. Renazzo, a unique meteorite difficult to classify, was arbitrarily assigned...duplicate samples taken from small, centimeter-sized meteorite specimens (Nawapali, Nogoya). In Nogoya, it was... Nec21 contents are fairly constant for each meteorite, except for Mokoia (10 measurements Footnotes... AL-American Meteorite Lrboratory, Denver, Colo. (Mr. G. I Huss); AM-American Meteorite Museum, &done...HEX-MANN and EDWARD ANDERS Table 3. Ages and Meteorite Alais Alais Alais IVUIla. Ivune IVUlG% IVU118 |
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| METEORITE RESEARCH ASTROPHYSICS AND SPACE SCIENCE LIBRARY A SERIES OF BOOKS ON THE RECENT DEVELOPMENTS...Holland VOLUME 12 METEORITE RESEARCH PROCEEDINGS OF A SYMPOSIUM ON METEORITE RESEARCH HELD IN VIENNA...the publisher INTRODUCTION The Symposium 'Meteorite Research' was conceived originally at the second...need to strengthen international co-operation in meteorite research, asks that the International Atomic Energy...discussed ranged from the computer-assisted study of meteorite orbit statistics, through problems of composition |
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| of eucrites Stannern and Nuevo Laredo in lunar-meteorite comparative studies 9(4): 341-344 0014 Ahrens...Distribution de la matiere organique dans la meteorite d'Orgueil par microscopic en fluorescence 19(4):...; et al. T h e exposure history of the Pitts meteorite 9(4): 317-321 0199 Begemann, F.; Vilcsek, E...thermal history of the Tieschitz unequilibrated meteorite; metallic chondrules and the origin of polycrystaUine...N.Z.;Meyer, H.O.A.;andKullerud, G. Lafayette meteorite; petrology and opaque mineralogy 32(1): 69-76 |
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| elements in Apollo 11 lunar rocks: Implications for meteorite influx and origin of moon 1117 P. W. GAST, N....in the Barwell and St. Severin 1neteorites. In Meteorite Research, (editor P. Millman), pp. 267- 274. D...metal of stone and stony-iron meteorites. In Meteorite Research, (editor P. Millman), pp. 355- 362. D...during the gardening processes associated with meteorite impact. Our recalculated analysis (basalt plus...4), all data lie to the right-hand side of the meteorite isochron (MURTHY and PATTERSON , 1962), which |
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| Earth-like body, so that one could infer from actual meteorite compositions, compositions for the mantle and...less like the terrestrial rocks of the region a meteorite looks, and the more resistant it is to terrestrial...greater the chance it will be found. Type of meteorite | Finds Irons Stony irons Stones 409 46 165 ...for all but the lighter gaseous elements. The meteorite data do, however, agree with the solar atmosphere...pyroxene-plagioclase achondrite. Average tektite. Diablo iron meteorite. Also contains (Buddhue, J. D., Pop. Astron. 58 |
