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| Press Ltd. Printed in Northern Ireland The Bununu meteorite, and a discussion of the pyroxene-plagioclase...Abstract--The Bununu meteorite, a pyroxene--plagioclase achondrite (howardite), fell in central Nigeria in April...0.04, H~O+ 1.53, H 2 0 - 0.12, sum 99.81. The meteorite is made up almost entirely of pyroxene and plagioclase...with accessory amounts of nickel-h'on, troilite, chromite, ilmenite and tridymite. The pyroxene--plagioclase...B u n u n u m e t e o r i t e fell in central Nigeria a b o u t ten o'clock on a n April m o r n i n |
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| Museum. Originally included with the Lake Bonne>meteorite (CORBETT, 1964), but shown to be distinct on the...accepted in revised form Museum, 6 January 1967) Bununu, Cumberland Falls (Black Chondr. Incl.), Abstract-A...Leedey, MezG-Madaras, and one silicate-rich iron meteorite, \I-oodbine, hare been chemically analgsed. The...part of the Mineralogical studies on some of meteorite research program at the Smithsonian Institution...State University. Woodbine, a silicate-rich iron meteorite, was analysed for bulk composition, thus giving |
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| GLASS PARTICLES AND SHOCK FEATURES IN THE BUNUNU HOWARDITE Albert F. Noonan Smithsonian Institution Washington...20560 Glass particles have been separated from the Bununu howardite microbreccia and analyzed with the electron...plotted, individual glass analyses from both the Bununu and Malvern howardites range through the howardite...melts of the major rock types and/or matrix in Bununu and Malvern. Shock-produced features which have...terrestrial and lunar impact breccias are also present in Bununu. Crystal deformation, maskeylenite and glass veining |
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| spinel makes up ~0.9 vol% of a suite of diogenites. Chromite (Cr-spinel) is considered a valuable petrogenetic...progresses, the melt composition changes and the chromite composition changes accordingly. For example,...and chromitites. Therefore, the most primitive chromite is expected to be that with the lowest Fe/ (Fe+Mg)...(Fe+Mg). Additionally, the highest Cr/(Cr+Al+Ti) of chromite in basalt may reflect crystallization from a melt...Reynolds 1991). In terrestrial basalts, the earliest chromite to crystallize is higher in Mg and Cr, and lower |
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| origin: (1) accumulation of orthopyroxene (OPX) + chromite (CHR) ± olivine (OL) during the crystallization...interior. Mantle is either not represented in the meteorite collection or is represented by QUE 93148. (B)...Olivine-bearing diogenites (LaPaz Icefield (LAP) 03569, Meteorite Hills (MET) 00424, MET 01084, Allan Hills (ALH)...reported to occur in howardites (Bholgati, ALH 78006, Bununu) by Delaney et al. (1980) and Fuhrman and Papike...16 410 0.22 0.16 0.04 102.6 0.48 0.45 0.05 Chromite Sample 1 2 3 4 5 6 7 10 SiO2 TiO2 Al2O3 |
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| some alkali acidic rocks . BRAXXMUOX: The Bununu meteorite, and a diiuseion of the pyroxene-plagioolaae...austraiitos . . . S. EL TA~OB: Composition of meteorite impact glass acrossthe Henbury etmwr&ld . . J...BBIAN ?dASON and E. Jurosrcwrcrr: The Winona meteorite . . . . . . . BBIAN MaSON: C&vine composition...iron meteorite Fallinge, Sweden . . . . . . . T. E. BUNCH, KLAUS I&m and K. G. SNETSINQER: Chromite composition... daubreelite and troilite in the Odessa iron meteorite and their genetic implications . . Wars VON ENQELHA~DT: |
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| 1. Introduction Unlike most other specific meteorite types (e.g. eucrites, I1 and L chondrites, etc...respect. Zmenj has a negative Eu anomaly, while Bununu, although enriched in REE relative to Zmenj, does...negative Eu anomaly, while the eucritic component in Bununu was probably similar to Juvinas which does not...not the result o f the random distribution of chromite in these meteorites. Finally, it is pertinent...(Wiley, New York, 1962). [31 13. Mason, The Bununu meteorite and a discussion of the pyroxene-plagioclase |
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| trollitc, pentlanditc,oldhamite,daubr•elite, chromite,magnetite,and timehire.The followingminerals,which...with high refractiveindex, replacingilmenite and chromite; E, a dark brown,probablyiso- tropicmineral;F...detail in only a few stony meteorites,be- each meteorite individually, even though each causewith earlier... but mostly in small amounts. Native gold was Bununu Pes]anoe Bur Gheluai Pillistfer Carraweena...wSth high refractive index replacing ilmeniteand chromite;E, a. dark brown,probably isotropicmineral; F |
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| I’ab teau I Qlivine signalee RGfgrences Noms Bununu - Howardites StudiZes Grains analyses 80 32*...explorCes; par contre 112 grains ont ttt identifib dans Bununu bien que Mason (1967) affirme n’avoir pas trouvk...La majorite des grains d’olivine presents dans Bununu, Kapoeta et Molten0 est distribuee de man&e plus...Frost (1971) dans Molteno. Quelques grains dans Bununu et Molten0 semblent appartenir aux groupes Fa 40...Kapoeta peuvent &tre rattaches au groupe Fa 79. Bununu contient par ailleurs un frag- b k dL 60 70 |
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| howardites, and mesosiderites. _____ peak Meteorite# Mass Peak T Source/ Cat. #+ Descr@ (mg) (OC)...29 Bholghati,28 Bholghati,l9 Bholghati,21 Binda Bununu Chaves EET83376,7 EET83376,8 EET87503,3 EET87503...National d'HistorieNaturelle (Dr. Paul Pellas); MWG, Meteorite Working Group of NASA/NSF; USNM, National Museum...insights into the thermal histories of a variety of meteorite classes (HASAN et al., 1986; KECK and SEARS, 1987;...grains, and six glossy black, opaque grains of chromite/ilmenite were separated from S&a de Magel A Cambridge |
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| Gent, B-9000 Gent, Belgium, composition, this meteorite resembles a terrestrial norite (HESSand HENI)ERsoN...dijjbentiation and magma formutiorl Jut’irlrrs. This meteorite has been fairly widely studied A major change...lithophile in meteorites, occurring mainly in chromite and pyroxene (BUNCH and OLSEN. 1974). Pyroxene...(STEELE and SMI~I, 1976). Some Cr is present as chromite (BUNCH and KEIL, 1971), and this mineral may be...the major host in cumulate eucrites. since l”,, chromite containing 34”” Cr accounts for all the Cr present |
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| Kapoeta parent body. Kapoeta is a ‘regolith’ meteorite, and mineral-chemical and petrographic data were...these observations to indicate that the Kapoeta meteorite represents the comminuted remains of differentiated...preclude the interpretation that the Kapoeta meteorite is a simple mixture of eucrites and diogenites...composition (NOONAN tion of the breccia from which this meteorite was deet al., 1974Fsome of which possess ‘zap...indicates III. SAMPLING PROCEDURE that the Kapoeta meteorite was not subjected to strong thermal metamorphism |
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| natural mineral standards (albite for Na and Al, chromite for Cr, diopside for Si and Ca, olivine for Mg...fluorescence from included or nearby phases such as chromite. We used a screening technique to judge whether...A diogenite); M. Lindstrom, R. Score, and the Meteorite Working Group for the U.S. Antarctic meteorites:...Amer. I. Sci. 287, l-32. MASON B. (1967) The Bununu meteorite, and a discussion of the pyroxene-pla~~la~ |
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| achondrites, appear to have no affinities to other meteorite types. INTRODUCTXON THE TERM mesosiderite wa...and plagioclase. PRIOR’S (1918) work on these meteorite groups revealed that there were no essential differences...compared to that devoted to the more abundant meteorite species. The mesosiderite group is a small one...considerable significance in the early history of some meteorite parent bodies. Prior concluded from his mineralogical...1. Known mesosidorites (1970) Find OPFall Meteorite Barea Bondoo* Budulen Chinguetti Clover Springs |
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| many meaosiderites are oonnidered aa a ooherent meteorite assemblage, their silicates con&t&g essentially...These achon~~s make up approximately 6% of all meteorite falls (HEY, 1966). Many of the general features...WOK, 1966a), Kapoeta (&SON and Wmc, 1966b) and Bununu (&SON, 1967). Wm (1952) considered some general...have been applied sinoe the earliest days of meteorite petrography and were formalized by BRWIXA (1994)...Sioux County Stannern Zagami Howardites: Bialystok Bununu Chaves Dingo Pup Donge, Frankfort Jodzie K&poets |
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| Drake 1979; Binzel and Xu 1993). These related meteorite types are known as the HED association.Eucrites...Pasamonte and Juvinas sampleswere provided by the meteorite collection at the Institute of Meteoritics, University...composition, and commonly twinned and clouded with chromite, contains prominent, fine exsolution lamellae...Yanai,K (1986)A review of the Yamato-8O, -82 meteorite collections Memoirs of the National Institute...for the pasamonteand JuMason,B. (i967) The Bununu meteorite,and a discussionof the pyroxvinas samples |
 | | Journal (article/letter/editorial) |
| abundance of evidence indicates that the HED meteorite association of howardites, eucrites and diogenites...(Hlirz et al., 1983) while being ejected. The meteorite-delivery process, including passage through Earth's...implied d is 0.41, 0.34, 0.39, 0.46, for Bholghati, Bununu, Jodzie and Kapoeta, respectively. Based on modal...estimated d = 0.63, 0.40, 0.47, for Bholghati, Bununu and Kapoeta, respectively (these petrographically...reported as 100 DATA COMPllATlON OF L. SCHULTZ 947 Bununu 0 &eta 0 "/ Jodzie OBholghatti 10 eucrite |
 | | Report (issue) |
| parent rocks. Introduction As the importance of meteorite impacts as a mechanism producing lunar land forms...ACKNOWLEDGMENTS.—We are indebted to the curators of the meteorite collections in the following institutions for...used in Table 1) follow. 1. YAMATO-7307.—This meteorite, also known as Yamato(l), was collected by the...27). 2. MASSING.—The analysis shows that this meteorite is very similar in composition to Yamato-7307;...mislabelled material. 3. CHAVES.—Thin sections of this meteorite show that it is a typical polymict breccia. The |
 | | Report (issue) |
| Structural and compositional properties of iron meteorite groups ___________ The geochemical behavior of...ABBREVIATIONS The following abbreviations for the meteorite classes are used throughout the tables and elsewhere;...percent) ; all others (<0.01 percent). A list of meteorite minerals is provided, and a tabulation of elemental...minerals are quartz and aluminosilicates; the common meteorite minerals are anhydrous, whereas hydrated minerals...actual extraterrestrial abundances; irons dominate meteorite finds since they are resistant to weathering and |
 | | Journal (article/letter/editorial) |
| augite) and Ca-plagioclase with accessory silica, chromite, ilmenite, troilite and metal (Duke and Silver...(2007). d See Fig. 6 caption for [Yb] references. meteorite, there is no resolved d7Li difference between falls...isotopically heavy eucrite Cachari (Fig. 1). The latter meteorite also has distinctive O isotope composition (Wiechert...which is the closest to NWA 3152 eucrite, HED meteorite with the highest Li content), and a is the kinetic...Vesta or were not sampled by currently available meteorite collection. Data for Iceland: Pistiner and Henderson |
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| were made of replicate samples from the same meteorite. Various sources of error in the method, including...attempt to contrast self-consistent models of meteorite evolution. In these applications of meteoritic...analyses on different samples, even from the same meteorite, whether the data reflect either basic geochemical...silicate phases with lesser amounts of phosphates, chromite, spinel and Na-Al rich glass. Metal is frequently...experimental procedures follows. Sample Preparation Meteorite samples, of masses ranging from 14 to 1238 mg |
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| cular bya x ates she woke RG Rn Wet The Elga meteorite: Silicate inclusions and shock metamorphism Eu...optical and Mossbauer studies of submicrometer chromite in Allende Row VTL OUSICN Me ry cr EOE EER RR...rims on coarse-grained inclusions in the Allende meteorite G. J. MacPherson, L. Grossman, J. M. Allen, and...Osram wel oregit is) anes Carbon in the Allende meteorite: Evidence for poorly graphitized carbon rather...76009 (Le) The magnetic properties of the Abee meteorite: Evidence for a strong magnetic N. Sugiura and |
 | | Book |
| provide an introduction to meteorite science and a handbook on meteorite classification. Insofar as I...These chapters would have been useful chiefly to meteorite researchers looking for a quick summary of group...quantitative meteorite studies declined during 1970-1973 as a result of the diversion of meteorite researchers'...efforts to the study of lunar samples. The rate of meteorite research activity is now increasing as researchers...during the past decade regarding problems of meteorite origin and classification. A complete list would |
 | | Book |
| provide an introduction to meteorite science and a handbook on meteorite classification. Insofar as I...These chapters would have been useful chiefly to meteorite researchers looking for a quick summary of group...quantitative meteorite studies declined during 1970-1973 as a result of the diversion of meteorite researchers'...efforts to the study of lunar samples. The rate of meteorite research activity is now increasing as researchers...during the past decade regarding problems of meteorite origin and classification. A complete list would |
