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Ca, Al-rich inclusions in Yamato 791717 (CO3) carbonaceous chondrite: Formation and alteration

林扬挺;王道德;KIMURAMakoto

  In three polished thin sections of Yamato 791717 (CO3), fifty\|five Ca, Al\|rich inclusions were found, which include two hibonite\|bearing, eight melilite\|rich and forty\|five spinel\|pyroxene inclusions. Based on the petrography and mineral chemistry of the inclusions, it is proposed that the melilite\|rich inclusions and spinel\|pyroxene inclusions condensed in the solar nebula, and the hibonite\|bearing inclusions crystallized from melts. The heavy alteration of the inclusions in Yamato 791717, which probably took place under a very oxidizing condition in the solar nebular, is also confirmed.……   
[关键词]:meteorite;chondrite;inclusion;solar nebula;condensation;crystallization;alteration.
[文献类型]:期刊
[文献出处]: 《Science in China(Series D:Earth Sciences)1998年05期
[格式]:PDF原版; EPUB自适应版(需下载客户端)