Extreme iron isotope variation of pyrite in the Muping gold deposit, Jiaodong: Implication for tracing metal origin
文献类型：期刊论文
| 作者 | Zhang, Yong-Wen3,4; Fan, Hong-Rui2,3,4; Hu, Fang-Fang2,3,4; Liu, Xuan1; Xie, Lie-Wen2,3; Li, Xing-Hui4 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 139页码:11 |
| ISSN号 | 0169-1368 |
| 关键词 | Iron isotope In-situ Kinetic fractionation Pyrite Metal origin Muping gold deposit |
| DOI | 10.1016/j.oregeorev.2021.104431 |
| 英文摘要 | Pyrite has complicated iron isotope fractionation behavior in the hydrothermal condition. Here we present a detailed in-situ iron isotope analyses of different generation pyrite from the Muping gold deposit, eastern China. delta Fe-56 values of pyrite investigated range from -4.25 parts per thousand to +1.78 parts per thousand, unlike previous bulk analytic data (-0.78 parts per thousand to +0.79 parts per thousand). Iron isotopic homogeneity of single pyrite grain, which can be verified by in-situ analysis, was recommended as the preferred and reliable criterion to judge the isotopic fractionation condition in the hydrothermal gold deposit. Inter-grain variations in Fe isotopic composition suggest occurrence of both kinetic and equilibrium fractionation for pyrite at Muping. Electron backscattered diffraction analysis shows that the replacement likely occurred via dissolution-reprecipitation pathway. The replacement process resulted in obvious kinetic isotope effect, in which pyrites are possessed in extreme negative Fe isotopic composition (similar to-4 parts per thousand). Maximum delta Fe-56 of pyrite up to +1.78 parts per thousand implied that kinetic isotopic effect also play a significant role in increasing the Fe isotopic composition of ore-forming fluids in the Muping gold deposit. Further model calculations suggested the kinetic isotopic effect was dominated by pyrite fast precipitation rather than pyrrhotite precipitation or pyrite precipitation via "FeS" pathway. This kinetic isotope effect ultimately will be partly or completely erased due to fast isotope exchange rate at medium-high temperature condition. Pyrite with homogeneous Fe isotopic composition can be used to trace iron source of hydrothermal gold deposit but be cautious. |
| WOS关键词 | ORE-FORMING FLUIDS ; FE-ISOTOPE ; JIAOBEI TERRANE ; NORTH CHINA ; S-ISOTOPE ; FRACTIONATION ; CONSTRAINTS ; REDOX ; MINERALIZATION ; PENINSULA |
| 资助项目 | National Natural Science Foundation of China[41772080] |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000706417900003 |
| 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102984]  |
| 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 | Fan, Hong-Rui |
| 作者单位 | 1.Geol Survey Finland, POB 96, FI-02151 Espoo, Finland 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yong-Wen,Fan, Hong-Rui,Hu, Fang-Fang,et al. Extreme iron isotope variation of pyrite in the Muping gold deposit, Jiaodong: Implication for tracing metal origin[J]. ORE GEOLOGY REVIEWS,2021,139:11. |
| APA | Zhang, Yong-Wen,Fan, Hong-Rui,Hu, Fang-Fang,Liu, Xuan,Xie, Lie-Wen,&Li, Xing-Hui.(2021).Extreme iron isotope variation of pyrite in the Muping gold deposit, Jiaodong: Implication for tracing metal origin.ORE GEOLOGY REVIEWS,139,11. |
| MLA | Zhang, Yong-Wen,et al."Extreme iron isotope variation of pyrite in the Muping gold deposit, Jiaodong: Implication for tracing metal origin".ORE GEOLOGY REVIEWS 139(2021):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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