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Fluid Evolution, H-O Isotope and Re-Os Age of Molybdenite from the Baiyinhan Tungsten Deposit in the Eastern Central Asian Orogenic Belt, NE China, and Its Geological Significance

文献类型：期刊论文

作者Wang, Ruiliang1; Zeng, Qingdong2,3,4; Zhang, Zhaochong1; Guo, Yunpeng2,3; Lu, Jinhang5
刊名MINERALS
出版日期2020-08-01
卷号10期号:8页码:18
关键词Re-Os dating fluid inclusions H-O isotope quartz-vein tungsten deposit eastern Central Asian Orogenic Belt
DOI10.3390/min10080664
英文摘要The quartz-vein-type Baiyinhan tungsten deposit is located at the eastern part of the Central Asian Orogenic Belt, NE China. Analyses of fluid inclusions, H-O isotope of quartz and Re-Os isotope of molybdenite were carried out. Three stages of mineralization were identified: The early quartz + wolframite + bismuth stage, the middle quartz + molybdenite stage and the late calcite + fluorite stage. Quartz veins formed in the three stages were selected for the fluid inclusion analysis. The petrographic observation and fluid inclusion microthermometry results revealed three types of fluid inclusions: CO2-H2O (C-type), liquid-rich (L-type) and vapor-rich (V-type). The homogenization temperatures of C-type, V-type and L-type inclusions were 233-374 degrees C, 210-312 degrees C, and 196-311 degrees C, respectively. The salinity of the three types of inclusions was identical, varying in the range of 5-12 wt%. The H-O isotope analyses results showed that quartz had delta(18)O(H2O)and delta D(SMOW)compositions of -2.6 parts per thousand to 4.3 parts per thousand and -97 parts per thousand to -82 parts per thousand, respectively, indicating that the ore-forming fluids were mainly derived from magmatic water with a minor contribution of meteoric water. The addition of meteoric water reduces the temperature and salinity of the ore-forming fluids, which leads to a decrease of the solubility of tungsten and molybdenum in the fluids and eventually the precipitation of minerals. Re-Os isotopic analysis of five molybdenite samples yielded an isochron age of 139.6 +/- 7.6 Ma (2 sigma) with an initial(187)Os of -0.05 +/- 0.57 (MSWD = 3.5). Rhenium concentrations of the molybdenite samples were between 3.1 ug/g and 8.5 ug/g. The results suggest that the metals of the Baiyinhan deposit have a crust origin, and the mineralization is one episode of the Early Cretaceous tungsten mineralization epoch which occurred at the eastern part of the Central Asian Orogenic Belt.
WOS关键词W-MO DEPOSIT ; INNER-MONGOLIA ; POLYMETALLIC DEPOSIT ; U-PB ; HEILONGJIANG PROVINCE ; HYDROTHERMAL FLUID ; GOLD DEPOSIT ; ORE-DEPOSIT ; CU DEPOSITS ; MINERALIZATION
资助项目National Natural Science Foundation of China[91962104] ; National Key Research Project of China[2017YFC0601306]
WOS研究方向Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000564661700001
出版者MDPI
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China ; National Key Research Project of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/97637]  
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
通讯作者Zeng, Qingdong
作者单位1.China Univ Geosci Beijing, Fac Geosci & Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.264 Brigade Jiangxi Nucl Ind Geol Bur, Ganzhou 341000, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Ruiliang,Zeng, Qingdong,Zhang, Zhaochong,et al. Fluid Evolution, H-O Isotope and Re-Os Age of Molybdenite from the Baiyinhan Tungsten Deposit in the Eastern Central Asian Orogenic Belt, NE China, and Its Geological Significance[J]. MINERALS,2020,10(8):18.
APA Wang, Ruiliang,Zeng, Qingdong,Zhang, Zhaochong,Guo, Yunpeng,&Lu, Jinhang.(2020).Fluid Evolution, H-O Isotope and Re-Os Age of Molybdenite from the Baiyinhan Tungsten Deposit in the Eastern Central Asian Orogenic Belt, NE China, and Its Geological Significance.MINERALS,10(8),18.
MLA Wang, Ruiliang,et al."Fluid Evolution, H-O Isotope and Re-Os Age of Molybdenite from the Baiyinhan Tungsten Deposit in the Eastern Central Asian Orogenic Belt, NE China, and Its Geological Significance".MINERALS 10.8(2020):18.

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来源：地质与地球物理研究所

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