Genesis of Chaoshan skarn Au deposit, Tongling, eastern China: Insights from mineral geochemistry
文献类型：期刊论文
| 作者 | Xie, Jiancheng4; Zhang, Xin4; Huang, Shan4; Ge, Likai4; Li, Quanzhong4; Sun, Weidong1,2,3
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| 刊名 | JOURNAL OF GEOCHEMICAL EXPLORATION
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 241页码:22 |
| ISSN号 | 0375-6742 |
| 关键词 | Skarn Au deposit Genesis Mineral geochemistry Chaoshan deposit Tongling region |
| DOI | 10.1016/j.gexplo.2022.107055 |
| 通讯作者 | Xie, Jiancheng(xiejiancheng08@hfut.edu.cn) |
| 英文摘要 | Skarn Au deposits are particularly developed along Middle and Lower Yangtze River region, eastern China, but gold behavior and genesis of the skarn Au deposits remain unclear. Whole-rock geochemical, sulfur isotopic and in-situ mineralogical data from the mineralized alteration stages of Chaoshan skarn Au deposit in Tongling re-gion are systemically investigated to reveal Au distribution and precipitation, and useful information for ore -forming process. The altered rocks and ores in the Chaoshan deposit have total REE contents of 7.81-226 ppm and show LREE enrichment patterns with weak negative to positive Eu (delta Eu = 0.71-2.24) anomalies. Electron probe microanalysis results indicate that garnet and pyroxene of the Chaoshan deposit are grossular-andradite and diopside-hedenbergite series, respectively. In situ elemental compositions of the euhedral pyrite analyzed show that invisible Au is mainly of lattice-bound Au+ in As-bearing pyrite. The studied pyrite samples also have high Co/Ni (mainly >1) and Se/Tl (>10) ratios, highly variable Pb and As contents, low Se content (<5.00 ppm), low Tl/Pb and Sb/Pb ratios, and relatively consistent sulfur isotopic compositions (5.0-8.3 parts per thousand). The distinctly geochemical characteristics indicate that the Chaoshan skarn Au mineralization was likely derived from a magmatic-hydrothermal system. A comprehensive discriminant analysis shows that the Au precipitation and enrichment of the Chaoshan deposit are a result of boiling-induced trace element fractionation resulted from fluid boiling during the skarn formation process. |
| 资助项目 | National Natural Science Foundation of China[42030801] ; National Natural Science Foundation of China[41373045] ; National Key Research and Development Program of China[2016YFC0600404] ; State Key Laboratory of Isotope Geochemistry at the Guangzhou Institute of Geochemistry |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000892125200002 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/181000]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Xie, Jiancheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Marine Sci, Beijing 100049, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Deep Sea Multidisciplinary Res Ctr, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 4.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Jiancheng,Zhang, Xin,Huang, Shan,et al. Genesis of Chaoshan skarn Au deposit, Tongling, eastern China: Insights from mineral geochemistry[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2022,241:22. |
| APA | Xie, Jiancheng,Zhang, Xin,Huang, Shan,Ge, Likai,Li, Quanzhong,&Sun, Weidong.(2022).Genesis of Chaoshan skarn Au deposit, Tongling, eastern China: Insights from mineral geochemistry.JOURNAL OF GEOCHEMICAL EXPLORATION,241,22. |
| MLA | Xie, Jiancheng,et al."Genesis of Chaoshan skarn Au deposit, Tongling, eastern China: Insights from mineral geochemistry".JOURNAL OF GEOCHEMICAL EXPLORATION 241(2022):22. |
入库方式： OAI收割
来源：海洋研究所
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