 | Krot, Alexander N., Petaev, Michail I., Russell, Sara S., Itoh, Shoichi, Fagan, Timothy J., Yurimoto, Hisayoshi, Chizmadia, Lysa, Weisberg, Michael K., Komatsu, Matsumi, Ulyanov, Alexander A., Keil, Klaus (2004) Amoeboid olivine aggregates and related objects in carbonaceous chondrites: records of nebular and asteroid processes. Geochemistry, 64 (3) 185-239 doi:10.1016/j.chemer.2004.05.001 | Journal (article/letter/editorial) | | ungrouped carbonaceous chondrites Acfer 094 and Adelaide; only one AOA was found in the CBb chondrite Hammadah...unmetamorphosed) carbonaceous chondrites, AOAs consist of forsterite (Fao2), Fe, Ni-metal (5–12 wt% Ni), and Ca, Al-rich...of AOAs contain lowCa pyroxene replacing forsterite. Forsterite and spinel are always 16O-rich (d17,18OB40%...and oxygen isotopic compositions to those of forsterite-rich accretionary rims surrounding different...thermodynamic analysis suggest that AOAs and forsterite-rich accretionary rims formed in 16O-rich gaseous |  | | Journal (article/letter/editorial) | | compositions in the ungrouped carbonaceous chondrite Adelaide and the K chondrite Kakangari: The effects of...suggested that the ungrouped carbonaceous chondrite Adelaide and the K chondrite Kakangari could be considered...Kakangari and are present in reduced abundances in Adelaide (approximately 70 ppm for O-anomalous grains)...presolar grains. In addition, presolar silicates in Adelaide show elevated Fe abundances and Fe-rich rims indicative...ungrouped carbonaceous chondrite Acfer 094, the first meteorite in which they were found (Nguyen and Zinner 2004; |  | | Journal (article/letter/editorial) | | uniformly 16O-enriched (⌬17O ⬃ ⫺20‰) and consist of forsterite (Fa⬍2), FeNi-metal, and a refractory component...CAIs and fine-grained minerals interspersed with forsterite grains) composed of Al-diopside, anorthite, ⫾spinel...carbonaceous chondrites Acfer 094, Adelaide, and LEW85332, forsterite is replaced to a various degree by...m) discontinuous layers around forsterite grains or along forsterite grain boundaries in AOA peripheries;...chondrite Leoville, only spinel grains are relict; forsterite, anorthite and Al-diopside were melted. This |  | | Journal (article/letter/editorial) | | origins of Adelaide, Belgica 7904, and the CR chondrites Renazzo and MAC 87320. Adelaide and Belgica...classify unambiguously and appear to be unique. Adelaide most closely resembles CVs in petrography (DAVY...CR, H, L, and LL groups were examined, as were Adelaide and Belgica 7904. Table I lists the meteorites...Prinr Table 1. Meteorites studled in this work* Meteorite No. of Chondrules Boriskino Erak0t Murchison... % 4128.1:2,-3,-4 418-l 4020-l 397-l 3922-l Adelaide Belgica7904 U%Xw Uncertain 4718-l NIPR *Thin |  | | Journal (article/letter/editorial) | | includes Kakangari (Graham and Hutchison, 1974), Adelaide (Davy et al., 1978; Brearley, 1991), Bench Crater...from a chip of the meteorite that was kindly provided by the Antarctic Meteorite Working Group. The sections...it was distributed heterogeneously through the meteorite, which are observations consistent with those...redlbrown staining is pervasive throughout the meteorite. Reflected light microscopy shows that thin veins...essentially forms a continuous groundmass within the meteorite (Fig. Ia,b). This material is extremely fine grained |  | | Book | | biogeochemistry in the world’s oceans. Sampling of North–South traverses of all of the world’s oceans at all depths...it, it was just at this time that the Allende meteorite fell and the minerals contained within the so-called...Silliman Chair and being curator of the Yale meteorite collection. In a continuation of Karl’s foray... CONTRIBUTORS GK Benedix Curtin University, Perth, Australia AN Krot University of Hawai‘i at Manoa, Honolulu...chemical histories both in the solar nebula and in meteorite parent bodies. It was in CAIs that the great discovery |  | | Journal (article/letter/editorial) | | chondrite, Carlisle Lakes, was discovered in Australia in 1977 and was originally classified as a highly...of two similar chondrites from Antarctica: Allan Hills 85151 and Yamato 75302, partly on the basis of their...were performed on two replicate samples for each meteorite, except PCA91002 (three samples) and Rumuruti...Table 1. The R chondrites. meteorite R fall Rumuruti R finds Acfer 217 Allan Hills 85151 Carlisle Lakes Dar...and the extent of silicate alteration. The scale ranges from WO (unweathered with no visible oxidation |  | | Journal (article/letter/editorial) | | three separate diagrams for three different size ranges. Compositions close to the endpoints Mg, Fe and...Two of them are shown in Fig. 9. The grain size ranges from some nanometers to 3.5 lm in diameter with...the (1 0 0) planes (Fig. 11). The lamellae width ranges from 5 to 50 nm. The selected area diffraction pattern...FeS should have magnesium-rich silicates (like forsterite or enstatite), Fe-metal or Fe oxides and iron...of olivine and pyroxene extend within the wide ranges Fo40–100 and En50–98, respectively. These Fe– Mg |  | | Journal (article/letter/editorial) | | widest range of oxygen isotopic composition of any meteorite group, as a consequence of the interaction of...and may become dominant. In the CI, CM, and CR meteorite groups, the two effects are of comparable magnitude...of CV chondrites. Whole rock Matrix Class Meteorite ␦18O ␦17O ⌬17O ␦18O ␦17O ⌬17O CV3 Ox-A...isotopic compositions of CO chondrites. Class CO Meteorite ␦18O ␦17O ⌬17O Acfer 202 Acfer 243 ALH 77307...shows the mixing line for spinel and forsterite for that meteorite. The CO data fall on a slope somewhat |  | 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) | | also many apparently ungrouped individuals (e.g., Adelaide; Belgica-7904; Dhofar 225; Essebi; Elephant Moraine...Moraine (EET) 96026; LEW 85332; LEW 88002; MacAlpine Hills [MAC] 87300; MAC 88107; Roberts Massif [RBT] 04133;...Sources of whole-rock samples and thin sections. Meteorite Sample source Thin section number Acfer 094...recognizing new groups and grouplets and expanding the ranges in bulk composition and petrographic characteristics...rectangular blocks. Standards included the Allende meteorite (Kallemeyn et al. 1989), the USGS reference materials |  | | Book | | METEORITE MINERALOGY Meteorites are fascinating cosmic visitors. Using accessible language, this book...book documents the history of mineralogy and meteorite research, summarizes the mineralogical characteristics...photographs of meteorite minerals, and with an accompanying online list of meteorite minerals, this book...book provides a useful resource for meteorite researchers, terrestrial mineralogists, cosmochemists,...students in these fields. a l a n e . r u b i n is a meteorite researcher who recently retired from the University |  | 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) | | chondrules are in the ordinary- and R-chondrite ranges. (3) It resembles type-3 enstatite chondrites in...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...7) are well within the equilibrated LL chondrite ranges (Fa 26.6–32.4; 1.42–37.0 wt% Co; Rubin 1990). Low-Ca...thin section of NWA 10214, we estimate that the meteorite contains ~2–3 vol% metallic Fe-Ni, corresponding |  | | Book | | 20 22 25 26 26 28 28 29 29 29 30 32 33 34 34 34 ranges, leaving little doubt that the grains are ancient...grains (Hoppe et al., 1995) from the Murchison meteorite are compared to astronomical measurements of the...bulk samples of SiC extracted from the Murchison meteorite. Isotopic ratios are relative to the reference...and the recent determination of spallation recoil ranges (Ott and Begemann, 2000) cast doubt on a chronological...result of isotopic equilibration, either on the meteorite parent body or in the laboratory. Apparently, | | | Book | | 20 22 25 26 26 28 28 29 29 29 30 32 33 34 34 34 ranges, leaving little doubt that the grains are ancient...grains (Hoppe et al., 1995) from the Murchison meteorite are compared to astronomical measurements of the...bulk samples of SiC extracted from the Murchison meteorite. Isotopic ratios are relative to the reference...and the recent determination of spallation recoil ranges (Ott and Begemann, 2000) cast doubt on a chronological...result of isotopic equilibration, either on the meteorite parent body or in the laboratory. Apparently, |
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