Syn-mineralization hydrous fluid activity in giant Jinchuan magmatic Ni-Cu sulfide deposit in North China Craton
文献类型：期刊论文
| 作者 | Yuan, Qing-Han1,2; Su, Ben-Xun1,2; Cui, Meng -Meng1,2; Sakyi, Patrick Asamoah3; Jing, Jie-Jun4 |
| 刊名 | LITHOS
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 438页码:15 |
| ISSN号 | 0024-4937 |
| 关键词 | Ni-Cu sulfide deposit Selective alteration Elemental exchange Fluid activity Hydrous mineral |
| DOI | 10.1016/j.lithos.2022.107014 |
| 英文摘要 | Giant magmatic Ni-Cu sulfide deposits in the world are hosted mainly in pristine gabbro-dolerite sills (e.g., the first largest in the Noril'sk region) and norite bodies (e.g., the second largest in Sudbury, Duluth, and Voisey's Bay), implying the petrogenic relationship between the giant deposits and anhydrous parental magmas. In contrast, the third largest Jinchuan deposit is hosted in dunite-and lherzolite-dominated peridotite bodies and characterized by the presence of hydrous minerals (e.g., hornblende and phlogopite) and intensive serpentini-zation of olivine. The role of water in the formation of the magmatic Ni-Cu sulfide deposit remains unclear. To reveal the potential linkage between sulfide mineralization and 'water' (i.e., hydrous minerals), a detailed petrographic investigation of the Jinchuan deposit and the associated mineral chemistry analyses have been conducted in this study. The distribution of serpentinization of olivine in the Jinchuan deposit is unevenly, being more pervasive in the sulfide-bearing rocks compared to sulfide-free rocks. The degree of serpentinization de-creases systematically in general sequence outwardly from the core net-textured dunite to the outer disseminated lherzolite at orebody-scale. In the sulfide-bearing rocks, the serpentinization is more intensively observed in the sulfide-rich portions compared to the sulfide-poor portions at thin section-scale. We consider sulfide content -dependent serpentinization as 'selective alteration', which is distinct from post-magmatic modifications and should have occurred coevally with sulfide liquid emplacement and sulfide crystallization. The selective alter-ation with dependence on sulfide contents is caused by hydrous fluids released from sulfide crystallization, because the crystallized sulfides cannot structurally accommodate hydrous components which previous latching onto the sulfide liquid. The olivine grains in sulfide-bearing rocks are reversely zoned with respect to Ni (Ni-poor cores, Ni-rich rims) and Co (Co-rich cores, Co-poor rims) which can be interpreted by stages of sulfide liquid -olivine Ni-Co exchange and Fe-Ni exchange. Comparison of intra-grain elemental distributions of olivine grains shows that hydrous fluid activity enhanced elemental exchange between olivine and sulfide liquid. Interestingly, the presence of hydrous minerals, protects olivine from selective alteration, suggesting that the hydrous minerals were formed during syn-mineralization fluid activity. These features are linkage between the inferred fluids compounded with sulfide droplets in previous experiments and their transfer and fate in natural magmatic sulfide deposits. The selective alteration proposed here, formed during the syn-mineralization stage and indicate that the fluid activity is instrumental in the formation of magmatic sulfide ores. The selective alteration may be a common characteristic in ultramafic rock-hosted magmatic sulfide deposits and a pathfinder for mineral exploration. |
| WOS关键词 | PLATINUM-GROUP ELEMENTS ; PGE DEPOSIT ; HYDROTHERMAL ALTERATION ; ULTRAMAFIC INTRUSION ; MELT COMPOSITION ; STABLE-ISOTOPE ; OLIVINE ; CONSTRAINTS ; SULFUR ; ORIGIN |
| 资助项目 | Ministry of Science and Technology National Key R&D Program of China[2022YFC2903501] ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Chi-nese Academy of Sciences |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000918340100001 |
| 资助机构 | Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Ministry of Science and Technology National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences ; Chi-nese Academy of Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106888]  |
| 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 | Yuan, Qing-Han; Su, Ben-Xun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Ghana, Dept Earth Sciencev, POB LG 58, Accra, Ghana 4.Vrije Univ Amsterdam, Fac Sci, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands |
| 推荐引用方式 GB/T 7714 | Yuan, Qing-Han,Su, Ben-Xun,Cui, Meng -Meng,et al. Syn-mineralization hydrous fluid activity in giant Jinchuan magmatic Ni-Cu sulfide deposit in North China Craton[J]. LITHOS,2023,438:15. |
| APA | Yuan, Qing-Han,Su, Ben-Xun,Cui, Meng -Meng,Sakyi, Patrick Asamoah,&Jing, Jie-Jun.(2023).Syn-mineralization hydrous fluid activity in giant Jinchuan magmatic Ni-Cu sulfide deposit in North China Craton.LITHOS,438,15. |
| MLA | Yuan, Qing-Han,et al."Syn-mineralization hydrous fluid activity in giant Jinchuan magmatic Ni-Cu sulfide deposit in North China Craton".LITHOS 438(2023):15. |
入库方式： OAI收割
来源：地质与地球物理研究所
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