 | | Journal (article/letter/editorial) | | Pnnted in U.S.A. + 00 Origin of metallic Fe-Ni in Renazzo and related chondrites MIN SUNG LEE,* ALAN E. RUBIN...Co-Ni correlation among metal grains from the Renazzo and Al Rais chondrites reported in previous studies...chondrule margins, chondrule rims, and matrix) in Renazzo, Al Rais, and the related chondrite, MacAlpine...grains. Although diffusive exchange between pentlandite and metal could produce the observed Ni gradient...INTRODUCTION THE UNGROUPEDCARBONACEOUS chondrite, Renazzo, contains - 120 mg/g metallic Fe-Ni ( WILK, 1969; |  | | Journal (article/letter/editorial) | | assemblages from the MAC 87320, EET 92011, and Renazzo CR carbonaceous chondrites. The objectives of this...assemblages composed of pentlandite, troilite, and Ni-rich metal. The assemblages in Renazzo contain tochilinite...magnetite, troilite, pentlandite, and phosphate. In all of the assemblages in Renazzo the tochilinite is...grained and intimately mixed with troilite, pentlandite, or magnetite. Opaque assemblages in CR chondrites...All rights reserved. 1. INTRODUCTION The Renazzo meteorite was first identified as distinct from other |  | Schrader, Devin L., Connolly, Harold C., Lauretta, Dante S., Zega, Thomas J., Davidson, Jemma, Domanik, Kenneth J. (2015) The formation and alteration of the Renazzo-like carbonaceous chondrites III: Toward understanding the genesis of ferromagnesian chondrules. Meteoritics & Planetary Science, 50 (1) 15-50 doi:10.1111/maps.12402 | Journal (article/letter/editorial) | | 1111/maps.12402 The formation and alteration of the Renazzo-like carbonaceous chondrites III: Toward understanding...conditions of ferromagnesian chondrules from the Renazzo-like carbonaceous (CR) chondrites, a systematic...cooling mss decomposed into pentlandite and pyrrhotite, with pentlandite exsolving from mss at 400–600...texture, and inferred formation temperature of pentlandite within chondrules studied here is inconsistent...processes of asteroids in the early INTRODUCTION Renazzo, the type specimen of the CR chondrite group, has |  | Bischoff, A., Palme, H., Ash, R.D., Clayton, R.N., Schultz, L., Herpers, U., Stöffler, D., Grady, M.M., Pillinger, C.T., Spettel, B., Weber, H., Grund, T., Endreβ, M., Weber, D. (1993) Paired Renazzo-type (CR) carbonaceous chondrites from the Sahara. Geochimica et Cosmochimica Acta, 57 (7) 1587-1603 doi:10.1016/0016-7037(93)90014-n | Journal (article/letter/editorial) | | Pergamon Press Ltd. Printed in U.S.A. Paired Renazzo-type (CR) carbonaceous chondrites from the Sahara...mineralogical similarities to the carbonaceous chondrite Renazzo were recovered at two locations of the Sahara:...26A1contents. The Acfer-El Djouf meteorite is classified as a CR (Renazzo-type) carbonaceous chondrite....comprises three non-Antarctic members (Al Rais, Renazzo, Acfer-El Djouf) and five Antarctic meteorites...lithological components of the Acfer-El Djouf meteorite are large chondrules (up to 1 cm in size; mean |  | | Journal (article/letter/editorial) | | polycrystalline kamacite embedded in chondrules of the Renazzo chondrite. Globule at lower right contains spherical...inclusion. D: a polycrystaUine kamacite chondrule in Renazzo, crowded with Neumann lines. Ni profile R R ' appears...chondrules were at first as clearly defined as those in Renazzo and Chainpur (Fig. 7A, B I. D u r ing a moderately...similar in composition to pyroxene elsewhere in the meteorite. I t seems clear here, and in like situations...substances. All to same scale, shown in D. A (Renazzo, carbonaceous) and B (Chainpur, "pigeonite"): clearly |  | | Journal (article/letter/editorial) | | chemistry and mineralogy of the Bench Crater meteorite, which is a small fragment, previously numbered...unusual features it was different from any other meteorite then represented in terrestrial collections. McSween...examined Adelaide*, a meteorite with features similar to that of Bench Crater. The meteorite was first described...This feature led to our re-investigation of the meteorite. The analysis of Davy and Whitehead is given in...International Commission for Meteorite Nomenclature since the meteorite was not recovered in Adelaide |  | | Journal (article/letter/editorial) | | detail in only a few stony meteorites,be- each meteorite individually, even though each causewith earlier...one-tenth of the meteorites examined. Clovis Renazzo Cold Bokkeveld Richardton Cull[son Dhurmsala...disappearance of the metal phase and produces pentlandite. Further com Fig. 1. Renazz o, X 125. Nickel-iron...pend on the sulfur and oxygen contents of the meteorite. A higher content of sulfur or oxygen With few...Si,, which are absent,from other parts of this meteorite. On rare occasionsgraphite forms well-devel- |  | | Journal (article/letter/editorial) | | 73 stony meteorites to identify the nature of meteorite ablation spheres (MAS) and constrain the processes...melted crusts are similar to those of the bulk meteorite. However, differences from whole rock suggest...that are formed by the melting dust particles. Meteorite ablation spheres produced at high altitude probably...probably have compositions very different from bulk meteorite and will resemble cosmic spherules derived from...microanalysis tools (Krinov, 1960; Rarndohr, 1967). Meteorite fusion crusts can provide valuable information |  | | Journal (article/letter/editorial) | | (CI), Murchison, Cold Bokkeveld and Murray (CM), Renazzo (CR), Allende and Mokoia (C3V) carbonaceous chondrites...concentration and isotopic composition of each meteorite are therefore closely similar to those of this...carbonates matched previously published values. In Renazzo, the carbonates have a 813C close to + 42%o/PDB...Between 950 and 1060°C, 813C reaches + 177.8%o in Renazzo, + 335.1%o in Cold Bokkeveld, and + 384.6%0 in...[15]. It is in such samples of the Murchison CM meteorite that the most extreme carbon isotopic compositions |  | | Journal (article/letter/editorial) | | by other researchers allow the definition of a Renazzo (CR) group of carbonaceous chondrites. We analyzed...twenty-seven elements. Along with previously analyzed Renazzo, six or more closely related fall events are represented...were studied ~tro~phically along with Renazzo and Al Rais. Renazzo has a lineation possibly caused by fluid-lub~cated... One of the earliest compositional studies of Renazzo was by MASON and WIIK ( 1962 ) . Other earlier...one by TAKAHASHI et al. ( 1978) who classified Renazzo as CVZ, and another by WOLF et al. ( 1980) who |  | Harju, Ellen R., Rubin, Alan E., Ahn, Insu, Choi, Byeon-Gak, Ziegler, Karen, Wasson, John T. (2014) Progressive aqueous alteration of CR carbonaceous chondrites. Geochimica et Cosmochimica Acta, 139. 267-292 doi:10.1016/j.gca.2014.04.048 | Journal (article/letter/editorial) | | that have been more-significantly altered (e.g., Renazzo and Al Rais), metallic Fe-Ni has been partially...chondrites constitute one of the most primitive meteorite groups. There has been minimal thermal metamorphism:...grains of sulfide (typically pyrrhotite and pentlandite) and intergrowths of saponite and serpentine...phyllosilicate sheaths (Wasson and Rubin, 2009). Renazzo, the CRchondrite prototype and one of only two...Magnetite is present in some CR chondrites (e.g., Renazzo; Weisberg et al., 1993), but not in others (e.g |  | | Journal (article/letter/editorial) | | Pergamon Press Ltd. Printed in U.S.A. The CR (Renazzo-type) carbonaceous chondrite group and its implications...isotopic study of eight meteorites, identified as CR (Renazzo-type) chondrites, reveals that they have a set...water to a greater degree than the rest of the meteorite. The overall degree of hydration in CR chondrites...fiamboidal magnetite in Renazzo matrix as being CI-like. It was later shown that Renazzo has a nitrogen isotopic...and CLAYTON, 1978; ROBERT and EPSTEIN, 1982). Renazzo was also found to have an oxygen isotopic composition |  | Schrader, Devin L., Connolly, Harold C., Lauretta, Dante S., Nagashima, Kazuhide, Huss, Gary R., Davidson, Jemma, Domanik, Kenneth J. (2013) The formation and alteration of the Renazzo-like carbonaceous chondrites II: Linking O-isotope composition and oxidation state of chondrule olivine. Geochimica et Cosmochimica Acta, 101. 302-327 doi:10.1016/j.gca.2012.09.045 | Journal (article/letter/editorial) | | com/locate/gca The formation and alteration of the Renazzo-like carbonaceous chondrites II: Linking O-isotope...conditions of type-I and type-II chondrules in the Renazzo-like carbonaceous (CR) chondrites, an in situ major-...http://dx.doi.org/10.1016/j.gca.2012.09.045 The Renazzo-like (CR) chondrites are one of the least altered...(2010) studied type-II chondrules in GRA 95229, Renazzo, and MAC 87320 and suggested that their O-isotope...included the most pristine/unaltered CR chondrites, Meteorite Hills (MET) 00426 and Queen Alexandra Range (QUE) |  | | Journal (article/letter/editorial) | | kinds of carbonaceouschondrites: (1) carbonaceous Renazzo-like (CR) group, (2) carbonaceous high-metal (CH)...Bencubbin-like group let CH-like group let Ungrouped Renazzo Al Rais El DjoufOOI * Kaidunt Temple Bar EET 87770~...~Paired with 40 other EET meteorites (Antarctic Meteorite Newsletter, 1989, 1994). §Paired with Acfer 207...uncertain. $Paired with QUE 94627 (Antarctic Meteorite Newsletter, 1996). classification than "group"...Bischoff, 1997; Marhas et al., 200 I), although Renazzo and Al Rais CAls contain secondary calcite and |  | Hiyagon, H., Sugiura, N., Kita, N.T., Kimura, M., Morishita, Y., Takehana, Y. (2016) Origin of the eclogitic clasts with graphite-bearing and graphite-free lithologies in the Northwest Africa 801 (CR2) chondrite: Possible origin from a Moon-sized planetary body inferred from chemistry, oxygen isotopes and REE abundances. Geochimica et Cosmochimica Acta, 186. 32-48 doi:10.1016/j.gca.2016.04.030 | Journal (article/letter/editorial) | | INTRODUCTION Recent studies suggest that differentiated meteorite parent bodies formed before chondrite parent bodies...of chlorapatite, Fe–Ni metal, troilite, and pentlandite. Orthopyroxene (opx) is present only in GBL,...formation from the melt. Iron–Ni metal, troilite, pentlandite, and Fe oxides (probably weathering products...(GFL) Clast #2 (GBL)(1) Clast #6 (GBL)(1) CR (Renazzo)(2) CR (average)(3) Acapulcoites (typical)(4) Acapulcoites...of GBL. Data sources: Mason and Wiik (1962) for Renazzo, Kallemeyn et al. (1994) for average CR, and Anders |  | Rubin, Alan E., Breen, John P., Isa, Junko, Tutorow, Sean (2017) NWA 10214-An LL3 chondrite breccia with an assortment of metamorphosed, shocked, and unique chondrite clasts. Meteoritics & Planetary Science, 52 (2) 372-390 doi:10.1111/maps.12797 | Journal (article/letter/editorial) | | (Table 1). We found one small weathered grain of pentlandite with ~19 wt% Ni and ~0.80 wt% Co that had an...Slab of the NWA 10214 LL3 chondrite breccia. The meteorite contains numerous well-defined chondrules and...can be viewed at wileyonlinelibrary.com.) The meteorite has been significantly weathered. Most of the...thin section of NWA 10214, we estimate that the meteorite contains ~2–3 vol% metallic Fe-Ni, corresponding...exhibit some patchy Fe-Mg zoning. Because the meteorite contains LL5 and LL6 clasts (see below), the whole |  | CHOE, Won Hie, HUBER, Heinz, RUBIN, Alan E., KALLEMEYN, Gregory W., WASSON, John T. (2010) Compositions and taxonomy of 15 unusual carbonaceous chondrites. Meteoritics & Planetary Science, 45 (4) 531-554 doi:10.1111/j.1945-5100.2010.01039.x | Journal (article/letter/editorial) | | Sources of whole-rock samples and thin sections. Meteorite Sample source Thin section number Acfer 094...rectangular blocks. Standards included the Allende meteorite (Kallemeyn et al. 1989), the USGS reference materials...Filomena fragment of the North Chile IIAB iron meteorite (Wasson et al. 2007). Our typical uncertainties...transmitted and reflected light (Table 1); sections of Meteorite Hills (MET) 01017 and Northwest Africa (NWA) 1152...set, but the sampling scatter in data for a new meteorite may hinder assignment based on this criterion |  | | Book | | Water-Rich Small Bodies 390 6.5 Primitive Asteroid-Meteorite Matches 394 6.6 Implications for Exploration of...same rate as older craters erode away (due to meteorite and micrometeorite bombardment), at least for...found that the best match for 433 Eros is an OC meteorite that has been altered at the surface of the asteroid...do not go longward of 0.9 mm, and a suggested meteorite analog cannot be identified beyond those generally...existence of polymict breccias in the Earthly meteorite collections. Some regions in the southern hemisphere |  | Hicks, L. J., MacArthur, J. L., Bridges, J. C., Price, M. C., Wickham-Eade, J. E., Burchell, M. J., Hansford, G. M., Butterworth, A. L., Gurman, S. J., Baker, S. H. (2017) Magnetite in Comet Wild 2: Evidence for parent body aqueous alteration. Meteoritics & Planetary Science, 52 (10) 2075-2096 doi:10.1111/maps.12909 | Journal (article/letter/editorial) | | this hypothesis, powdered material from a CR2 meteorite (NWA 10256) was shot into the aerogel at 6.1 km...silicates, requiring aqueous activity in the meteorite parent body. Hematite and maghemite c-Fe2O3 are...look at powdered material from a CR2 chondrite meteorite, selected as an analogue to Wild 2, including...magnetite grain from a thin section of the same CR2 meteorite shows a Fe-rich content with a trace of Cr. Peaks...Troilite Illite Nontronite Nontronite Nontronite Pentlandite Tg1a 10 lm Tg1b 6 lm Tg2 ~6 lm #187 Tg1 5 lm |  | | Journal (article/letter/editorial) | | sharp, but irregular interfaces with the host meteorite and have characteristics which suggest that formed...from hot deserts. The 26AI concentration in a meteorite depends upon different parameter like the exposure...analyzed sample and the terrestrial age of the meteorite. Our data contributes to the understanding of...production rate characteristic for the corresponding meteorite class. We do not find extremely low 26AI concentrations...order to reconstruct the irradiation history of a meteorite in detail, it is essential to analyze other cosmogenic |  | | Journal (article/letter/editorial) | | grid for electron microscopy. Large areas of meteorite matrix were scanned and checked for the occurrence...material into which they were mixed prior to meteorite compaction This is to be expected if the diamonds...TOWARD A BETTER UNDERSTANDING OF THE ASTEROID-METEORITE CONNECTION. J. F. Bell 1111, S. Murchiez, N. Izenbergz...sufficient accuracy to enable comparisons with major meteorite types. To achieve the latter goal, NEAR is equipped...address fundamental questions in asteroid and meteorite science. This presentation focuses primarily on |  | | Journal (article/letter/editorial) | | YEARS OF TERRESTRIAL RESIDENCE IN THE TATAHOUINE METEORITE. J. A. Barrat', Ph. Gilletz, Th. Heulin3, M. Lesourd4...analysis of the carbonates within the Tatahouine meteorite and the underlying ground confirm their terrestrial...were observed on the external surfaces of the meteorite fragments collected in 1994 and on gravels, gun...bacteria clusters from the soil in which the meteorite samples were embedded. This study emphasizes the...Houston TX 77058, USA. Introduction: Martian meteorite ALH 84001 (ALH) is a brecciated cumulate orthopyroxenite |  | | Journal (article/letter/editorial) | | (Dhofar 007) and noncumulated (NWA 011). Results: A meteorite shower, 37 pieces weighing a total of 21,270 g...REE pattern supports a cumulate type of this meteorite also. At the other side the data of NWA 011 are...REE pattern supports a noncumulate type of this meteorite. Thus, these two meteorites belong to different...local materials and not from a widespread mix of meteorite types. From these observations we infer that the...metal grain volumetric difference between the two meteorite classes. Because of the problem of pairing meteorites |  | | Book | | 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 |  | | Book (edition) | | Historical Review J. Dorschner Abstract Via meteorite research, mineralogy became the first discipline...turnaround occurred, when the well-witnessed meteorite rain of L’Aigle in 1803 convinced the authorities...popularity among astrophysicists. Further, primitive meteorite and interplanetary dust mineralogy began to play...metals [41, 42]. 2.3 Renunciation from Meteor/Meteorite Analogy As already mentioned, the iron dust model...occurrence of sulfides as troilite, pyrrhotite, and pentlandite in circumstellar environment has been stressed |
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