Fluid unmixing/immiscibility as an ore-forming process in the giant REE-Nb-Fe deposit, Inner Mongolian, China: Evidence from fluid inclusions

doi:10.1016/j.gexplo.2005.11.039

	Fluid unmixing/immiscibility as an ore-forming process in the giant REE-Nb-Fe deposit, Inner Mongolian, China: Evidence from fluid inclusions
	Fan, HR; Hu, FF; Yang, KF; Wang, KY
刊名	JOURNAL OF GEOCHEMICAL EXPLORATION
	2006-04-01
卷号	89 期号:1-3 页码:104-107
关键词	Fluid Inclusion Fluid Unmixing/immiscibility Ree Mineralization Bayan Obo
ISSN号	0375-6742
DOI	10.1016/j.gexplo.2005.11.039
文献子类	Article
英文摘要	The giant Bayan Obo REE-Nb-Fe deposit consists of replacement bodies hosted in dolomite marble made up of magnetite, REE fluorocarbonates, fluorite, aegirine, amphibole, calcite and barite. Two or three phase CO2-rich, three phase hypersaline liquid-vapor-solid, and two phase liquid-rich inclusions have been recognized in mineralized fluorite and quartz samples. Microthennometry measurements indicate that the carbonic phase in CO2-rich inclusions is nearly pure CO2. Fluids involving in REE-Nb-Fe mineralization at Bayan Obo might be mainly of H2O-CO2-NaCl-(F-REE) system. Coexistences of brine inclusions and CO2-rich inclusions with similar homogenization temperatures give evidence that immiscibility happened during REE mineralization. An unmixing of an original H2O-CO2-NaCl fluid probably derived from carbonatitic magma. The presence of REE-carbonates as an abundant solid in fluid inclusions shows that the original ore-forming fluids are very rich in REE, and therefore, have the potential to produce economic REE ores at Bayan Obo. (C) 2006 Elsevier B.V. All rights reserved.
WOS关键词	BAYAN-OBO ; CARBONATITE
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000237626100025
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66072]
专题	中国科学院地质与地球物理研究所
通讯作者	Fan, HR
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Fan, HR,Hu, FF,Yang, KF,et al. Fluid unmixing/immiscibility as an ore-forming process in the giant REE-Nb-Fe deposit, Inner Mongolian, China: Evidence from fluid inclusions[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2006,89(1-3):104-107.
APA	Fan, HR,Hu, FF,Yang, KF,&Wang, KY.(2006).Fluid unmixing/immiscibility as an ore-forming process in the giant REE-Nb-Fe deposit, Inner Mongolian, China: Evidence from fluid inclusions.JOURNAL OF GEOCHEMICAL EXPLORATION,89(1-3),104-107.
MLA	Fan, HR,et al."Fluid unmixing/immiscibility as an ore-forming process in the giant REE-Nb-Fe deposit, Inner Mongolian, China: Evidence from fluid inclusions".JOURNAL OF GEOCHEMICAL EXPLORATION 89.1-3(2006):104-107.