Mineralogy and He-Ar isotopic compositions of pyrites in the Paishanlou Au deposit on the northern margin of North China Craton
文献类型：期刊论文
| 作者 | Bai, Yang1,2,3; Zhang, Lianchang1,2,3; Zhu, Mingtian1,2,3,4; Huang, Ke1,2,3; Wang, Yibo1,2,5; Shi, Fangping1,2,3 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2019-10-23 |
| 页码 | 20 |
| ISSN号 | 0072-1050 |
| 关键词 | deep predicting EPMA He-Ar isotopes mixed ore-forming fluids Paishanlou Au deposit thermoelectricity of pyrite |
| DOI | 10.1002/gj.3644 |
| 英文摘要 | The Paishanlou Au deposit is an altered-rock type with the magmatic-hydrothermal type deposit on the northern margin of the North China Craton and hosts a resource of 40 tonnes Au. The deposit is hosted in the Neoarchean metamorphic rocks of the Jianping Group and is controlled mainly by ENE-NW-trending ductile shear zones. The orebodies are stratoid, and mineralization styles are divided into auriferous altered felsic mylonite and altered biotite plagioclase mylonite. The sulphide minerals are dominated by pyrite that is recognized as pyrite 1, pyrite 2, and pyrite 3 based on crystalline form and structure, and pyrite 2 is the main auriferous mineral. Three types of pyrite were selected for electron microprobe analysis (EPMA), and the results show S deficiency, indicating that the pyrites are formed in reducing conditions. The pyrites have a trend from being Fe deficient to being Fe enriched, suggesting that the crystallization rate increases with the decrease of impurity composition from the early to the late stage. The Co/Ni ratios and Co-Ni-As diagram reflect that the Paishanlou Au deposit is associated with magmatic-hydrothermal and is affected by various hydrothermal. He-Ar isotopic analyses of auriferous pyrite 2 indicate that the ore-forming fluids are mixtures of mantle-derived and modified air-saturated water (MASW). He-3/He-4 ratios range from 0.21 to 1.51 Ra (Ra = 1.39 x 10(-6) for air), corresponding to a 2.18%-19.06% mantle He contribution. The formation of mixed ore-forming fluids was related to magmatism associated with craton destruction during the Early Cretaceous. Also, we attempt to use the thermoelectric characteristics of pyrite and a contour chart of Au grades to indicate potential mineralization prospecting areas. |
| WOS关键词 | MANTLE-DERIVED FLUIDS ; ORE-FORMING FLUIDS ; GOLD DEPOSITS ; NOBLE-GASES ; HYDROTHERMAL FLUIDS ; HELIUM-ISOTOPES ; COPPER-DEPOSIT ; OROGENIC BELT ; SHEAR ZONE ; INCLUSIONS |
| 资助项目 | Ministry of Science and Technology of the People's Republic of China[2016YFC0600106] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000491598500001 |
| 资助机构 | Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China ; Ministry of Science and Technology of the People's Republic of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95761]  |
| 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 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhang, Lianchang |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing, Peoples R China 4.Univ Sci & Technol, Earth Sci & Engn, Qingdao, Shandong, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Yang,Zhang, Lianchang,Zhu, Mingtian,et al. Mineralogy and He-Ar isotopic compositions of pyrites in the Paishanlou Au deposit on the northern margin of North China Craton[J]. GEOLOGICAL JOURNAL,2019:20. |
| APA | Bai, Yang,Zhang, Lianchang,Zhu, Mingtian,Huang, Ke,Wang, Yibo,&Shi, Fangping.(2019).Mineralogy and He-Ar isotopic compositions of pyrites in the Paishanlou Au deposit on the northern margin of North China Craton.GEOLOGICAL JOURNAL,20. |
| MLA | Bai, Yang,et al."Mineralogy and He-Ar isotopic compositions of pyrites in the Paishanlou Au deposit on the northern margin of North China Craton".GEOLOGICAL JOURNAL (2019):20. |
入库方式： OAI收割
来源：地质与地球物理研究所
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