The ore-forming fluid and geochronology of the Suyunhe Mo deposit, West Junggar, Xinjiang

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	The ore-forming fluid and geochronology of the Suyunhe Mo deposit, West Junggar, Xinjiang
	Zhong ShiHua 1,2; Shen Ping 1; Pan HongDi 3; Zheng GuoPing 4; Yan YuHong 1,2; Li Jing 5
刊名	ACTA PETROLOGICA SINICA
	2015-02-01
卷号	31 期号:2 页码:449-464
关键词	Re-os Age Fluid Inclusions Porphyry Mo Deposit Suyunhe West Junggar Xinjiang
文献子类	Article
英文摘要	The Suyunhe Mo deposit,in the western part of the Barluk Mountain, West Junggar, northern Xinjiang, belongs to the Barluk metallogenic belt and consists of three granitic bodies. The orebodies are mainly located in the tuff which contacts with granitic bodies. Mo mineralization occurred in the Early Permain, with the Re-Os model ages of molybdenites being 293. 3 +/- 4. 0Ma similar to 296. 8 +/- 4. 3Ma, the isochron age of molybdenites being 294.4 +/- 1. 7Ma and the weighted average age of molybdenites being 295. 0 +/- 1. 5Ma. Three types of fluid inclusions, i. e., liquid-rich two phases, vapor-rich two phases, and daughter mineral-bearing polyphase inclusions, are present in the Suyunhe Mo deposit. The research indicates that the ore-forming fluids in different granitoids are similar and can be divided into three stages. The early stage, belonging to NaCl-CO2-H2O system, develops all three types of inclusions and is characterized by high temperature, high salinity and high density, with the homogenization temperatures being above 491 degrees C, the salinites being above 58.6% NaCleqv and the densities being above 1. 15g/cm(3). The middle stage, belonging to NaCl-CO2-H2O system, develops liquid-rich two phases and vapor-rich two phases inclusions and is characterized by high-middle temperature, middle-low salinity and middle-low density, with the homogenization temperatures being 240 similar to 443 degrees C, the salinities being 1. 7% similar to 21. 0% NaCleqv,, and the densities being 0. 38 similar to 1. 03g/cm(3). The late stage, belonging to NaCl-H2O system, only develops liquid-rich two phases inclusions and is characterized by middle-low temperature, low salinity and middle-low density, with the homogenization temperatures being 153 similar to 239 degrees C, the salinities being below 9. 6% NaCleqv,, and the densities being 0. 81 similar to.0. 94g/cm(3). The hydrogen and oxygen isotopes of water in quartz inclusions indicate that the early stage fluids were mainly made up of magmatic water, and the middle and late stage fluids consisted of magmatic water and meteoric water. Moreover, the proportion of meteoric water rose with the evolution of fluids. Besides, both the fluid inclusions and hydrogen-oxygen isotopes studies indicate that the boiling and mixing of fluids are the main factors that lead to the deposition of ore-forming substances.
WOS关键词	PORPHYRY CU-MO ; NW CHINA ; COPPER-DEPOSIT ; GEOLOGICAL SIGNIFICANCE ; MOLYBDENUM DEPOSIT ; METALLOGENIC BELT ; INNER-MONGOLIA ; CENTRAL-ASIA ; BAOGUTU ; INCLUSION
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000350616100012
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62558]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China 4.Xinjiang Bur Geol & Mineral Explorat & Dev, Reg Geol Survey Party 1, Urumqi 830000, Peoples R China 5.Hebei United Univ, Tangshan 063000, Peoples R China
推荐引用方式 GB/T 7714	Zhong ShiHua,Shen Ping,Pan HongDi,et al. The ore-forming fluid and geochronology of the Suyunhe Mo deposit, West Junggar, Xinjiang[J]. ACTA PETROLOGICA SINICA,2015,31(2):449-464.
APA	Zhong ShiHua,Shen Ping,Pan HongDi,Zheng GuoPing,Yan YuHong,&Li Jing.(2015).The ore-forming fluid and geochronology of the Suyunhe Mo deposit, West Junggar, Xinjiang.ACTA PETROLOGICA SINICA,31(2),449-464.
MLA	Zhong ShiHua,et al."The ore-forming fluid and geochronology of the Suyunhe Mo deposit, West Junggar, Xinjiang".ACTA PETROLOGICA SINICA 31.2(2015):449-464.