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Mineralogical and oxygen isotopic study of a new ultrarefractory inclusion in the Northwest Africa 3118 CV3 chondrite

文献类型：期刊论文

作者Xiong, Yong5; Zhang, Ai-Cheng4,5; Kawasaki, Noriyuki6; Ma, Chi1; Sakamoto, Naoya2; Chen, Jia-Ni5; Gu, Li-Xin3; Yurimoto, Hisayoshi2,6
刊名METEORITICS & PLANETARY SCIENCE
出版日期2020-10-14
页码22
ISSN号1086-9379
DOI10.1111/maps.13575
英文摘要Calcium-aluminum-rich inclusions (CAIs) are the first solid materials formed in the solar nebula. Among them, ultrarefractory inclusions are very rare. In this study, we report on the mineralogical features and oxygen isotopic compositions of minerals in a new ultrarefractory inclusion CAI 007 from the CV3 chondrite Northwest Africa (NWA) 3118. The CAI 007 inclusion is porous and has a layered (core-mantle-rim) texture. The core is dominant in area and mainly consists of Y-rich perovskite and Zr-rich davisite, with minor refractory metal nuggets, Zr,Sc-rich oxide minerals (calzirtite and tazheranite), and Fe-rich spinel. The calzirtite and tazheranite are closely intergrown, probably derived from a precursor phase due to thermal metamorphism on the parent body. The refractory metal nuggets either exhibit thin exsolution lamellae of Fe,Ni-dominant alloy in Os,Ir-dominant alloy or are composed of Os,Ir,Ru,Fe-alloy and Fe,Ni,Ir-alloy with troilite, scheelite, gypsum, and molybdenite. The later four phases are apparently secondary minerals. The Zr,Sc,Y-rich core is surrounded by a discontinuous layer of closely intergrown hibonite and spinel. The CAIs are rimmed by Fe-rich spinel and Al-rich diopside. Perovskite has high concentrations of the most refractory rare earth elements (REEs) but is relatively depleted in the moderately refractory and volatile REEs, consistent with the ultrarefractory REE pattern. Based on this unusual Zr,Sc,Y-rich mineral assemblage, the layered distribution in CAI 007, and the REE concentrations in perovskite, we suggest that CAI 007 is an ultrarefractory inclusion of condensation origin. In CAI 007, hibonite, spinel, and probably Al-rich diopside are(16)O-rich (Delta O-17 similar to-22 parts per thousand) whereas perovskite and davisite are O-16-poor (Delta O-17 similar to-3 parts per thousand). Such oxygen isotope heterogeneity suggests that the UR inclusion formed in the various degrees of(16)O-rich nebular setting or was originally O-16-rich and then experienced oxygen isotope exchange with(16)O-poor fluid on the CV3 chondrite parent body.
WOS关键词AL-RICH INCLUSION ; SOLAR NEBULA ; REFRACTORY INCLUSION ; CARBONACEOUS CHONDRITE ; MELILITE CRYSTALS ; ALLENDE ; CAI ; CONDENSATION ; PETROGRAPHY ; EXCHANGE
资助项目B-type strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; CNSA[D020204] ; National Natural Science Foundation of China[41673068] ; National Natural Science Foundation of China[41973061] ; Natural Science Foundation of Jiangsu Province of China[BK20170017]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000577660400001
出版者WILEY
资助机构B-type strategic Priority Program of the Chinese Academy of Sciences ; B-type strategic Priority Program of the Chinese Academy of Sciences ; CNSA ; CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; B-type strategic Priority Program of the Chinese Academy of Sciences ; B-type strategic Priority Program of the Chinese Academy of Sciences ; CNSA ; CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; B-type strategic Priority Program of the Chinese Academy of Sciences ; B-type strategic Priority Program of the Chinese Academy of Sciences ; CNSA ; CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China ; B-type strategic Priority Program of the Chinese Academy of Sciences ; B-type strategic Priority Program of the Chinese Academy of Sciences ; CNSA ; CNSA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province of China ; Natural Science Foundation of Jiangsu Province of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98305]  
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.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
2.Hokkaido Univ, Creat Res Inst Sousei, Isotope Imaging Lab, Sapporo, Hokkaido 0010021, Japan
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
5.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
6.Hokkaido Univ, Dept Nat Hist Sci, Sapporo, Hokkaido 0600810, Japan
推荐引用方式
GB/T 7714		 Xiong, Yong,Zhang, Ai-Cheng,Kawasaki, Noriyuki,et al. Mineralogical and oxygen isotopic study of a new ultrarefractory inclusion in the Northwest Africa 3118 CV3 chondrite[J]. METEORITICS & PLANETARY SCIENCE,2020:22.
APA Xiong, Yong.,Zhang, Ai-Cheng.,Kawasaki, Noriyuki.,Ma, Chi.,Sakamoto, Naoya.,...&Yurimoto, Hisayoshi.(2020).Mineralogical and oxygen isotopic study of a new ultrarefractory inclusion in the Northwest Africa 3118 CV3 chondrite.METEORITICS & PLANETARY SCIENCE,22.
MLA Xiong, Yong,et al."Mineralogical and oxygen isotopic study of a new ultrarefractory inclusion in the Northwest Africa 3118 CV3 chondrite".METEORITICS & PLANETARY SCIENCE (2020):22.

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来源：地质与地球物理研究所

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