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Copper isotopic compositions of the Zijinshan high-sulfidation epithermal Cu-Au deposit, South China: Implications for deposit origin
Li-Yan Wu;  Rui-Zhong Hu;  Xiao-Feng Li;  Sheng-Ao Liu;  Yan-Wen Tang;  Yong-Yong Tang
2017
发表期刊Ore Geology Reviews
卷号83页码:191-199
摘要

The Zijinshan high-sulfidation epithermal Cu-Au deposit is located in the Zijinshan ore field of South China, comprising porphyry-epithermal Cu-Au-Mo-Ag ore systems. The Cu ore body is more than 1000 m thick and is characterized by an assemblage of digenite-covellite-enargite-alunite. Digenite is the dominant Cu-bearing mineral, which makes this deposit unique, although the mechanisms of digenite formation remain controversial. To elucidate the genesis of digenite, this paper presents the Cu isotopic compositions of Cu-sulfides in the Zijinshan high-sulfidation Cu-Au deposit. The Cu isotopic values (Cu-65 relative to NIST 976) of all samples range from -2.97 parts per thousand to +0.34 parts per thousand, and most values fall in a narrow range from -0.49 parts per thousand to +0.34 parts per thousand, which is similar to the Cu isotopic signature of typical porphyry systems. Copper isotope ratios of each mineral decrease with increasing depth, a trend that is also typical of porphyry deposits. The variation tendency of delta Cu-65 values between sulfides is consistent with the sequence of mineral formation. These observations suggest that the Cu-sulfides in the Zijinshan Cu-Au deposit have a hypogene origin.

关键词Copper Isotopes hypogene high-sulfidaton zijinshan south China
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8189
专题矿床地球化学国家重点实验室
作者单位1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
3.State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Beijing 100083, China
推荐引用方式
GB/T 7714
Li-Yan Wu;Rui-Zhong Hu;Xiao-Feng Li;Sheng-Ao Liu;Yan-Wen Tang;Yong-Yong Tang. Copper isotopic compositions of the Zijinshan high-sulfidation epithermal Cu-Au deposit, South China: Implications for deposit origin[J]. Ore Geology Reviews,2017,83:191-199.
APA Li-Yan Wu;Rui-Zhong Hu;Xiao-Feng Li;Sheng-Ao Liu;Yan-Wen Tang;Yong-Yong Tang.(2017).Copper isotopic compositions of the Zijinshan high-sulfidation epithermal Cu-Au deposit, South China: Implications for deposit origin.Ore Geology Reviews,83,191-199.
MLA Li-Yan Wu;Rui-Zhong Hu;Xiao-Feng Li;Sheng-Ao Liu;Yan-Wen Tang;Yong-Yong Tang."Copper isotopic compositions of the Zijinshan high-sulfidation epithermal Cu-Au deposit, South China: Implications for deposit origin".Ore Geology Reviews 83(2017):191-199.
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