气候变化领域集成服务门户(CCPortal): Geochemistry and origin of metal, olivine clasts, and matrix in the Dong Ujimqin Qi mesosiderite

CCPortal

DOI	10.1111/j.1945-5100.2008.tb00665.x
	Geochemistry and origin of metal, olivine clasts, and matrix in the Dong Ujimqin Qi mesosiderite
	Kong, Ping; Su, Wen; Li, Xianhua; Spettel, Bernhard; Palme, Herbert; Tao, Kejie
通讯作者	Kong, P (通讯作者)
发表日期	2008
ISSN	1086-9379
起始页码	451
结束页码	460
卷号	43 期号:3
英文摘要	The Dong Ujimqin Qi mesosiderite is the first recorded fall of a stony-iron meteorite in China. According to silicate textures and metal composition, this meteorite is classified as a member of subgroup 1B. Instrumental neutron activation analyses (INAA) of metals show that the matrix metal has lower concentrations of Os, Ir, Re, and Pt, but higher concentrations of Ni and Au than the 7.5 cm metal nodule present in the meteorite. We attribute these compositional differences to fractional crystallization of molten metal. Studies of olivine clasts show that FeO contents are uniform in individual olivine crystals but are variable for different olivine clasts. Although concentrations of rare earth elements (REEs) change within olivine clasts, they all exhibit a vee-shaped pattern relative to Cl chondrites. The relatively high concentrations of REEs in olivine and the shape of REE patterns require a liquid high in REEs and especially in light REEs. As Such a liquid was absent from the region where basaltic and gabbroic clasts formed, rnesosiderite olivine must have formed in a part of the differentiated asteroid that is different from the location where other rnesosiderite silicate clasts formed.
关键词	IRON-METEORITES ORDINARY CHONDRITES SIDEROPHILE ELEMENTS PARENT BODY HISTORY PETROLOGY NODULES IIIAB CORONAS PHASES
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000258566500002
来源期刊	METEORITICS & PLANETARY SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257560
推荐引用方式 GB/T 7714	Kong, Ping,Su, Wen,Li, Xianhua,et al. Geochemistry and origin of metal, olivine clasts, and matrix in the Dong Ujimqin Qi mesosiderite[J]. 中国科学院青藏高原研究所,2008,43(3).
APA	Kong, Ping,Su, Wen,Li, Xianhua,Spettel, Bernhard,Palme, Herbert,&Tao, Kejie.(2008).Geochemistry and origin of metal, olivine clasts, and matrix in the Dong Ujimqin Qi mesosiderite.METEORITICS & PLANETARY SCIENCE,43(3).
MLA	Kong, Ping,et al."Geochemistry and origin of metal, olivine clasts, and matrix in the Dong Ujimqin Qi mesosiderite".METEORITICS & PLANETARY SCIENCE 43.3(2008).