 | 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...phyllosilicates (saponite and sodium phlogopite), magnetite, Ni-rich sulfides, fayalite (Fa>go), Ca-Fe-rich...mobilization of Ca during aqueous alteration. Magnetite nodules are replaced to various degrees by fayalite...Oxygen isotopic compositions of the coexisting magnetite and fayalite plot close to the terrestrial fractionation |  | | 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...Fe/Mg ratios in these minerals. Plagioclase and magnetite were also separated from Karoonda. Mineral identifications...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 |
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