Department of Geology and Mineralogy, Faculty of Science, Kyoto University
Department of Geology and Mineralogy, Faculty of Science, Kyoto University
Department of Geology and Mineralogy, Faculty of Science, Kyoto University
抄録(英)
Four relict minerals; olivine, pyroxene, a silica mineral and metallic (Fe, Ni) were found in the chondrules and as the mineral fragments of Yamato-691 (EH3). Two mineral assemblages of the relict minerals were found; (a) olivine+pyroxene+metallic (Fe, Ni), and (b) pyroxene+silica mineral. The relict pyroxene in assemblage (a) was formed from the reaction of olivine and silica-rich phase (gas or liquid). These two assemblages cannot coexist under an equilibrium condition. The compositional difference of pyroxene between assemblages (a) and (b) suggests the fractionation which occurred before the chondrule formation.
雑誌書誌ID
AA10784627
雑誌名
Proceedings of the NIPR Symposium on Antarctic Meteorites
Relict minerals and their assemblages in Yamato-691 (EH3)
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KJ00000036251
(1.41MB)
概要
