• 责任者：Dai Deqiu (Institute of Geology ; Hunan University of Science and Technology ; Xiangtan 411201 ; China) ; Chen Xinyue
• 刊名：Chinese Journal of Geology
• 出版年：2013
• 卷期：48(3)
• 关键词：球粒陨石 ; chondrites ; 橄榄石 ; olivine
• 页码：p.762-772
• 图表：3 illus., 2 tables, 25 refs.
• 分类号：0100
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

     Ca-, Al-rich inclusions, chondrules and amoeboid olivine aggregates are the early assemblages of the solar nebula. 4 olivine and Ca, Al-rich assemblages were studied to compare with their petrography and mineral chemistry. The petrography and mineral chemistry characteristics argues that spinel-pyroxene-rich inclusion embedded in olivine and Ca, Al-rich amoeboid olivine aggregates are likely assemblages of solar nebular condensates. The plagioclase-olivine inclusions（POIs） and Ca-,Al-rich chondrules were crystallized from melts. The characteristics of mineral modal compositions of POIs and Ca-, Al-rich chondrules argues they probably represent intermediate assemblages between typical refractory inclusions and chondrules. Spinel in amoeboid olivine aggregates （GRV022459-2C1）is the most remarkably FeO-rich in all assemblages, and it indicates alteration of the aggregate happened under high oxygen fugacity. Chondrules and coarse-grained Ca-, Al-rich inclusions are probably crystallized from melt in the same affair. The coarse-grained Ca-, Al-rich inclusions form probably the reservoir of Ca-, Al-rich prior matters, and Mg, Fe silicate chondrules form in the reservoir of Ca-,Al-poor prior matters. POIs and Ca-, Al-rich chondrules form the district between coarse- grained inclusions and Mg, Fe silicate chondrules.