Magmatic-Hydrothermal Origin of Mercury in Carlin-style and Epithermal Gold Deposits in China: Evidence from Mercury Stable Isotopes | |
Runsheng Yin; Changzhou Deng; Bernd Lehmann; Guangyi Sun; Ryan F. Lepak; James P. Hurley; Chenghai Zhao; Guiwen Xu; Qinping Tan; Zhuojun Xie; Ruizhong Hu![]() | |
2019 | |
Source Publication | ACS Earth and Space Chemistry
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Volume | 3Issue:8Pages:1631-1639 |
Abstract | Carlin-style (sediment-hosted, “invisible” gold) and epithermal gold deposits are commonly enriched in mercury (Hg), but the source of this metal is not well-known. In the world, the association of Hg with gold is often related to magmatism; however, it is still unclear whether magmatism serves as a direct Hg source in gold deposits or only an energy source that drives hydrothermal circulation and leaches Hg from sedimentary country rocks. Here, we use Hg stable isotopes to directly indicate the source of Hg in a major Carlin-style gold deposit (Shuiyindong) and two small epithermal gold deposits (Xianfeng and Sishanlinchang) in China. In the three deposits, mineralized rocks (Au > 0.10 μg/g) are elevated in Hg levels by 1 to 3 orders of magnitude, compared to barren rocks (Au < 0.05 μg/g). The majority of the mineralized rocks in all three deposits show quite narrow ranges of δ202Hg (−1 to 0.5‰) and Δ199Hg (−0.1 to 0.1‰). The absence of significant mass-independent fractionation signals of Hg in mineralized rocks (Δ199Hg ≈ 0) is consistent with magmatic rocks, implying Hg was either leached from already crystalline magmatic rocks or directly mass transferred from a silicate magma via magmatic-hydrothermal fluid. Our reconnaissance study thus indicates a dominant origin of magmatic Hg for the three gold deposits. |
Keyword | Mercury Isotopes isotope Fractionation source Tracing gold Deposits magmatic-hydrothermal Fluid Model |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/10852 |
Collection | 矿床地球化学国家重点实验室 |
Affiliation | 1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 2.College of Earth Sciences, Jilin University, Changchun 130061, China 3.Mineral Resources, Technical University of Clausthal, 38678 Clausthal-Zellerfeld, Germany 4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 5.Environmental Chemistry and Technology Program, University of WisconsinMadison, Madison, Wisconsin 53706, United States |
Recommended Citation GB/T 7714 | Runsheng Yin,Changzhou Deng,Bernd Lehmann,et al. Magmatic-Hydrothermal Origin of Mercury in Carlin-style and Epithermal Gold Deposits in China: Evidence from Mercury Stable Isotopes[J]. ACS Earth and Space Chemistry,2019,3(8):1631-1639. |
APA | Runsheng Yin.,Changzhou Deng.,Bernd Lehmann.,Guangyi Sun.,Ryan F. Lepak.,...&Ruizhong Hu.(2019).Magmatic-Hydrothermal Origin of Mercury in Carlin-style and Epithermal Gold Deposits in China: Evidence from Mercury Stable Isotopes.ACS Earth and Space Chemistry,3(8),1631-1639. |
MLA | Runsheng Yin,et al."Magmatic-Hydrothermal Origin of Mercury in Carlin-style and Epithermal Gold Deposits in China: Evidence from Mercury Stable Isotopes".ACS Earth and Space Chemistry 3.8(2019):1631-1639. |
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