Mercury isotope constraints on the source for sediment-hosted lead-zinc deposits in the Changdu area, southwestern China
文献类型:期刊论文
作者 | Chunxia Xu; Runsheng Yin; Jiantang Peng; James P. Hurley; Ryan F. Lepak; Jianfeng Gao; Xinbin Feng; Ruizhong Hu; Xianwu Bi |
刊名 | Mineralium Deposita |
出版日期 | 2018 |
卷号 | 53期号:3页码:339-352 |
关键词 | Mercury Isotope geochemical Tracer sediment-hosted Lead-zinc Deposit changdu Area |
英文摘要 | The Lanuoma and Cuona sediment-hosted Pb-Zn deposits hosted by Upper Triassic limestone and sandstone, respectively, are located in the Changdu area, SW China. Mercury concentrations and Hg isotopic compositions from sulfide minerals and potential source rocks (e.g., the host sedimentary rocks and the metamorphic basement) were investigated to constrain metal sources and mineralization processes. In both deposits, sulfide minerals have higher mercury (Hg) concentrations (0.35 to 1185 ppm) than the metamorphic basement rocks (0.05 to 0.15 ppm) and sedimentary rocks (0.02 to 0.08 ppm). Large variations of mass-dependent fractionation (3.3aEuro degrees in delta Hg-202) and mass-independent fractionation (0.3aEuro degrees in Delta Hg-199) of Hg isotopes were observed. Sulfide minerals have Hg isotope signatures that are similar to the hydrothermal altered rocks around the deposit, and similar to the metamorphic basement, but different from barren sedimentary rocks. The variation of a dagger Hg-199 suggests that Hg in sulfides was mainly derived from the underlying metamorphic basement. Mercury isotopes could be a geochemical tracer in understanding metal sources in hydrothermal ore deposits. |
语种 | 英语 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/8677] |
专题 | 地球化学研究所_矿床地球化学国家重点实验室 |
作者单位 | 1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China 2.Department at Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, WI 53709, USA 3.Environmental Chemistry and Technology Program, University of Wisconsin-Madison, Madison, WI 53706, USA 4.University of Chinese Academy of Sciences, Beijing 100039, China 5.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China |
推荐引用方式 GB/T 7714 | Chunxia Xu;Runsheng Yin;Jiantang Peng;James P. Hurley;Ryan F. Lepak;Jianfeng Gao;Xinbin Feng;Ruizhong Hu;Xianwu Bi. Mercury isotope constraints on the source for sediment-hosted lead-zinc deposits in the Changdu area, southwestern China[J]. Mineralium Deposita,2018,53(3):339-352. |
APA | Chunxia Xu;Runsheng Yin;Jiantang Peng;James P. Hurley;Ryan F. Lepak;Jianfeng Gao;Xinbin Feng;Ruizhong Hu;Xianwu Bi.(2018).Mercury isotope constraints on the source for sediment-hosted lead-zinc deposits in the Changdu area, southwestern China.Mineralium Deposita,53(3),339-352. |
MLA | Chunxia Xu;Runsheng Yin;Jiantang Peng;James P. Hurley;Ryan F. Lepak;Jianfeng Gao;Xinbin Feng;Ruizhong Hu;Xianwu Bi."Mercury isotope constraints on the source for sediment-hosted lead-zinc deposits in the Changdu area, southwestern China".Mineralium Deposita 53.3(2018):339-352. |
入库方式: OAI收割
来源:地球化学研究所
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