Evaluating the physicochemical conditions for gold occurrences in pyrite
文献类型：期刊论文
| 作者 | He, Hongping3,4,5; Xian, Haiyang4,5; Zhu, Jianxi4,5; Tan, Wei4,5; Wu, Xiao3,4,5; Yang, Yiping4,5; Li, Shan3,4,5; Qiu, Kunfeng2; Zhu, Runliang4,5 ; Teng, H. Henry1
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| 刊名 | AMERICAN MINERALOGIST
 |
| 出版日期 | 2023 |
| 卷号 | 108期号:1页码:211-216 |
| 关键词 | STATE IRON |
| ISSN号 | 0003-004X |
| DOI | 10.2138/am-2022-8207 |
| 英文摘要 | While noble metals often occur as minor components in host minerals in various ore deposits, little theoretical assessment exists to predict the occurrence of these metals. Here, we probe the fundamental controls responsible for the occurrence of trace elements in host minerals through first-principles calculations. We apply the theoretical model to understanding the debated issues concerning the occurrence of gold (Au) in pyrite, in which the valence of Au is ascribed to either positive or negative values. Our results indicate that (1) both positive and negative valent Au may occur in pyrite and (2) higher sulfur fugacity and lower temperature lead to more Au+ occupying Fe sites in pyrite. These findings suggest that chemical states and speciation of the Au in host pyrite are ultimately controlled by temperature and sulfur fugacity, providing insight into the formation conditions of ore deposits and facilitating strategy design for beneficiation. ? 2023 De Gruyter. All rights reserved. |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000923813700018 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80190]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 作者单位 | 1.Institute of Surface-Earth System Science, Tianjin University, Tianjin; 300072, China 2.State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources, China University of Geosciences, Beijing; 100083, China 3.University of Chinese Academy of Sciences, Beijing; 100049, China 4.CAS Center for Excellence in Deep Earth Science, Guangzhou; 510640, China 5.CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou; 510640, China |
| 推荐引用方式 GB/T 7714 | He, Hongping,Xian, Haiyang,Zhu, Jianxi,et al. Evaluating the physicochemical conditions for gold occurrences in pyrite[J]. AMERICAN MINERALOGIST,2023,108(1):211-216. |
| APA | He, Hongping.,Xian, Haiyang.,Zhu, Jianxi.,Tan, Wei.,Wu, Xiao.,...&Teng, H. Henry.(2023).Evaluating the physicochemical conditions for gold occurrences in pyrite.AMERICAN MINERALOGIST,108(1),211-216. |
| MLA | He, Hongping,et al."Evaluating the physicochemical conditions for gold occurrences in pyrite".AMERICAN MINERALOGIST 108.1(2023):211-216. |
入库方式： OAI收割
来源：广州地球化学研究所
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