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He and Ar isotopic compositions and genetic implications for the giant Shizhuyuan W-Sn-Bi-Mo deposit, Hunan Province, South China
Li-YanWu; Rui-ZhongHu; Jian-TangPeng; Xian-WuBi; Guo-HaoJiang; Chen, Hong-Wei; Wang, Qiao-Yun; Liu, Ya-Ying
2011
Source PublicationInternational Geology Review
Volume53Issue:5-6Pages:677-690
AbstractThe Shizhuyuan ore deposit in southern Hunan Province is a world-class W090009Sn090009Bi090009Mo occurrence hosted by Devonian limestone in the thermal aureole of the Qianlishan granite. Mineralization coincided with intrusion of the granite pluton during Mesozoic crustal extension in South China. We present new He and Ar isotope data for volatiles released from pyrite in the Shizhuyuan deposit. Concentrations of 40Ar range from 0.21 to 2.38 0103 100908086 cm3 STP 40Ar/g, and 4He concentrations range from 0.8 to 65.1 0103 100908086 cm3 STP 4He/g. 3He/4He ratios vary from 0.06 to 1.66 Ra (where Ra is the 3He/4He ratio of air = 1.39 0103 100908086) and 40Ar/36Ar ratios range from 293 to 1072. The isotopic compositions of He and Ar indicate that the ore-forming fluids were mantle-derived, modified by air-saturated crustal fluids. Shallow-level boiling increased 3He concentrations, whereas crustal contamination decreased 3He/4He ratios in the magmatic fluids. The occurrence of mantle-derived components in the magmatic fluid indicates that the associated Qianlishan granite is not a typical S-type pluton that formed entirely by crustal melting. We propose that the mineralization was related to mantle upwelling and Mesozoic lithosphere extension of the South China Block.
KeywordHe And Ar Isotopes Shizhuyuan W-sn-bi-mo Deposit Qianlishan Granite Crust-mantle Interaction Hunan Province China
Subject Area矿床地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/7082
Collection矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
Li-YanWu,Rui-ZhongHu,Jian-TangPeng,et al. He and Ar isotopic compositions and genetic implications for the giant Shizhuyuan W-Sn-Bi-Mo deposit, Hunan Province, South China[J]. International Geology Review,2011,53(5-6):677-690.
APA Li-YanWu.,Rui-ZhongHu.,Jian-TangPeng.,Xian-WuBi.,Guo-HaoJiang.,...&Liu, Ya-Ying.(2011).He and Ar isotopic compositions and genetic implications for the giant Shizhuyuan W-Sn-Bi-Mo deposit, Hunan Province, South China.International Geology Review,53(5-6),677-690.
MLA Li-YanWu,et al."He and Ar isotopic compositions and genetic implications for the giant Shizhuyuan W-Sn-Bi-Mo deposit, Hunan Province, South China".International Geology Review 53.5-6(2011):677-690.
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