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A new occurrence of corundum in eucrite and its significance

文献类型：期刊论文

作者Li, Jie-Ya6; Zhang, Ai-Cheng4,6; Sakamoto, Naoya2; Yurimoto, Hisayoshi1,2,3; Gu, Li-Xin5
刊名AMERICAN MINERALOGIST
出版日期2020-11-01
卷号105期号:11页码:1656-1661
关键词Corundum Northwest Africa 8647 Al-rich lithology eucrite Vesta
ISSN号0003-004X
DOI10.2138/am-2020-7361
英文摘要The diversity of lithologies is an important proxy of internal evolution in differentiated planets and asteroids. The major lithologies in Vesta, based on the howardite-eucrite-diogenite clan meteorites, include basalt, gabbro, noritic orthopyroxenite, orthopyroxenite, dunite, harzburgite, and dacite. No other lithology has been reported up to date. In this study, we report a new occurrence of corundum in eucrite meteorite Northwest Africa (NWA) 8647. Three-dimensional petrographic observations reveal that the corundum grain occurs as a mineral inclusion in a highly deformed pyroxene fragment. The texture indicates that the corundum is not a contaminant. The corundum-associated pyroxenes have Fe-Mn compositions consistent with typical pyroxenes from howardite-eucrite-diogenite meteorites. We suggest that the corundum grain could be a xenocryst incorporated during the ascent of a basaltic magma. The results might indicate the presence of an Al-rich, Si-poor region, probably lithology in the interior of Vesta, implying that the evolution and internal structure should be much more complex than previously thought.
WOS关键词BASALTIC TERRAINS ; MAGMA OCEAN ; ORIGIN ; VESTA ; INCLUSION ; PETROGENESIS ; DIOGENITES ; HOWARDITE ; IMPACT ; CORE
资助项目Chinese Academy of Sciences[XDB41000000] ; pre-research Project on Civil Aerospace Technologies - CNSA[D020204] ; Natural Science Foundations of China[41673068] ; Natural Science Foundations of China[41973061] ; Jiangsu Province of China[BK20170017]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000596764500006
出版者MINERALOGICAL SOC AMER
资助机构Chinese Academy of Sciences ; Chinese Academy of Sciences ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; Natural Science Foundations of China ; Natural Science Foundations of China ; Jiangsu Province of China ; Jiangsu Province of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; Natural Science Foundations of China ; Natural Science Foundations of China ; Jiangsu Province of China ; Jiangsu Province of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; Natural Science Foundations of China ; Natural Science Foundations of China ; Jiangsu Province of China ; Jiangsu Province of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; pre-research Project on Civil Aerospace Technologies - CNSA ; pre-research Project on Civil Aerospace Technologies - CNSA ; Natural Science Foundations of China ; Natural Science Foundations of China ; Jiangsu Province of China ; Jiangsu Province of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/99880]  
专题地质与地球物理研究所_科技支撑系统
通讯作者Zhang, Ai-Cheng
作者单位1.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2525210, Japan
2.Hokkaido Univ, Creat Res Inst, Isotope Imaging Lab, Sapporo, Hokkaido 0100021, Japan
3.Hokkaido Univ, Dept Nat Hist Sci, Sapporo, Hokkaido 0600810, Japan
4.CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
6.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jie-Ya,Zhang, Ai-Cheng,Sakamoto, Naoya,et al. A new occurrence of corundum in eucrite and its significance[J]. AMERICAN MINERALOGIST,2020,105(11):1656-1661.
APA Li, Jie-Ya,Zhang, Ai-Cheng,Sakamoto, Naoya,Yurimoto, Hisayoshi,&Gu, Li-Xin.(2020).A new occurrence of corundum in eucrite and its significance.AMERICAN MINERALOGIST,105(11),1656-1661.
MLA Li, Jie-Ya,et al."A new occurrence of corundum in eucrite and its significance".AMERICAN MINERALOGIST 105.11(2020):1656-1661.

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来源：地质与地球物理研究所

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