Hydrothermal apatite record of ore-forming processes in the Hatu orogenic gold deposit, West Junggar, Northwest China
文献类型：期刊论文
| 作者 | Zheng, Jiahao1,2,3; Shen, Ping1; Feng, Wanyi3 |
| 刊名 | CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 177期号:2页码:17 |
| 关键词 | Hydrothermal apatites Trace elements In situ oxygen isotopes Ore-forming processes Gold deposits |
| ISSN号 | 0010-7999 |
| DOI | 10.1007/s00410-022-01893-x |
| 英文摘要 | The textures and compositions of hydrothermal apatite grains have been reported in many iron oxide-apatite (IOA), porphyry, and rare-earth elements (REE) polymetallic deposits. However, such information for apatite in hydrothermal gold deposit is not available. In this study, we present integrated textural, elemental, and in situ oxygen isotopic data of hydrothermal apatite grains from the Hatu gold deposit (56t Au, average grade: 5 g/t) in the West Junggar, Northwest China, to investigate the detailed mineralization processes and nature of ore-forming fluids. Hydrothermal apatite is present within the quartz-sulfide ores at the Hatu gold deposit. Apatite grains of the Hatu gold ores contain abundant fluid inclusions and fine sulfide crystals, indicating that they are closely related to gold mineralization. Three types of hydrothermal fluorapatite (Ap1, Ap2, and Ap3) were revealed by Cathodoluminescence (CL) imaging. The Ap1 and Ap2 formed in the auriferous ore-forming stage, whereas the Ap3 formed in the post-ore stage. The three types of apatite have distinct total REE concentrations (216-751 ppm for Ap1, 14-120 ppm for Ap2, and 914-1422 ppm for Ap3) as well as chondrite-normalized REE distribution patterns. The textures and compositions of different apatites are inconsistent with dissolution-re-precipitation processes but instead point to three episodes of apatite formation in the Hatu hydrothermal system. The Ap3 has different REE and lower Eu/Eu* values (0.97-1.72) than Ap1 (1.34-4.50) and Ap2 (1.69-4.95), indicating a change of fluid compositions and a decrease of oxygen fugacity from the auriferous ore-forming stage to post-ore stage. All three types of apatite (Ap1, Ap2, and Ap3) show relatively high and consistent oxygen isotope compositions ranging from 14.2 +/- 0.3 parts per thousand to 15.2 +/- 0.2 parts per thousand, from 14.5 +/- 0.2 parts per thousand to 15.0 +/- 0.3 parts per thousand, and from 13.8 +/- 0.3 parts per thousand to 15.4 +/- 0.2 parts per thousand, respectively. Their calculated delta O-18(fluid) values are higher than magmatic-hydrothermal fluids but consistent with those from metamorphic fluids derived from meta-basalts. The near-zero delta S-34 values of hydrothermal pyrite grains in the gold ores are much higher than those of pyrite framboid grains in the ore-hosted sedimentary rocks (- 41.1 to - 24.3 parts per thousand), suggesting the sulfur may be derived from meta-basalts rather than sedimentary rocks in the mining area. Taken together, we suggest that Hatu is an orogenic gold deposit formed by fluids and metals derived from metamorphic de-volatilization of meta-basalts at depth. Our study highlights that a combination of CL imaging, in situ trace elements, and oxygen isotope compositions of hydrothermal apatite can be a novel and powerful tool to trace the nature of ore-forming fluids in the hydrothermal gold deposits. |
| WOS关键词 | TRACE-ELEMENT COMPOSITIONS ; OXYGEN-ISOTOPE ANALYSIS ; NW CHINA ; HYDROGEN ISOTOPE ; SONGWE HILL ; FLUID-FLOW ; XINJIANG ; GEOCHEMISTRY ; EVOLUTION ; REE |
| 资助项目 | National Natural Science Foundation of China[41903042] ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences[132A11KYSB20190070] ; National Key Research and Development Program of China[2018YFC0604004] ; National Key Research and Development Program of China[2018YFC0603801] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000752366100001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; International Partnership Program of International Cooperation Bureau, Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104887]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Zheng, Jiahao; Shen, Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China 3.Fuzhou Univ, Zijin Sch Geol & Min, Fuzhou 350108, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jiahao,Shen, Ping,Feng, Wanyi. Hydrothermal apatite record of ore-forming processes in the Hatu orogenic gold deposit, West Junggar, Northwest China[J]. CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,2022,177(2):17. |
| APA | Zheng, Jiahao,Shen, Ping,&Feng, Wanyi.(2022).Hydrothermal apatite record of ore-forming processes in the Hatu orogenic gold deposit, West Junggar, Northwest China.CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,177(2),17. |
| MLA | Zheng, Jiahao,et al."Hydrothermal apatite record of ore-forming processes in the Hatu orogenic gold deposit, West Junggar, Northwest China".CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 177.2(2022):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。