 | KROT, ALEXANDER N., PETAEV, MICHAEL I., SCOTT, EDWARD R. D., CHOI, BYEON-GAK, ZOLENSKY, MICHAEL E., KEIL, KLAUS (1998) Progressive alteration in CV3 chondrites: More evidence for asteroidal alteration. Meteoritics & Planetary Science, 33 (5) 1065-1085 doi:10.1111/j.1945-5100.1998.tb01713.x | Journal (article/letter/editorial) | | divided into two major subgroups or lithologies, Bali-like (cV3,,~) and Allende-like (CV3,d), in which...Ikeda, 1997). The cv30,B lithology is present in Bali, Kaba, parts of the Mokoia breccia and, possibly...replaces low-Ca pyroxenes and rims and veins forsterite grains; it also forms coarse lath-shaped grains...fayalitic olivine rims around individual forsterite grains and forsterite phenocrysts in chondrules, (2) fayalitic...halos around relic inclusions of Ni-rich metal in forsterite, (4) lath-shaped fayalitic olivine (-Fa40-50) |  | | Journal (article/letter/editorial) | | Type B Ca-Al-rich inclusions from the Allende meteorite is: spine1 (1550°C) --) melilite (14OO’C,Ak22)...the Ca-Al-rich inclusions (CAIs) in the Allende meteorite and in other carbonaceous chondrites are probably...recast into the coordinates spine1 (MgAl,O,) - forsterite (Mg*SiO,) - anorthite (CaA1,Si20s) - gehlenite...A composition is plotted as the point on the forsterite-anorthite-gehlenite plane where the line between...Perspective view of the Spinel-Anorthite-Gahlenite-Forsterite tetrahedron used to portray CA1 compositions |  | | Journal (article/letter/editorial) | | oxygen of the meteorite. The t 60 excess is distributed very heterogeneously within each meteorite [2]. It...carried out on ground-up pieces of the whole meteorite. The various density fractions then consist mostly...matrix, and a single Allende inclusion, all of the meteorite data points in Fig. 1 lie close to a single mixing...described for an inclusion ("chondrule") in the Bali meteorite [12]. Mineral separation was carried out in...isotopic compositions of C2, C3 and C4 meteorites Meteorite (class) Description * Murchison (C2) matrix |
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