Redox-controlled olivine-sulfide equilibration of the Shitoukengde Ni-Cu deposit in Qinghai-Tibet Plateau and its implications
文献类型：期刊论文
| 作者 | Mao, Ya-Jing4; Zheng, Xuyang2,4; Pan, Tong3; Yuan, Fanglin2,4; Huang, Hua-Liang1; Qin, Ke-Zhang2,4 |
| 刊名 | MINERALIUM DEPOSITA
 |
| 出版日期 | 2023-10-20 |
| 页码 | 23 |
| ISSN号 | 0026-4598 |
| 关键词 | Magmatic Ni-Cu deposit Oxidation state Olivine-spinel oxybarometer Sulfide-olivine interaction Re-equilibration East Kunlun |
| DOI | 10.1007/s00126-023-01215-6 |
| 英文摘要 | Olivine (Fo80-88) from the Shitoukengde deposit exhibits low levels of Ca, Cr, and Al (< 220 ppm) and varying Ni content. The low Ca-Cr-Al contents in olivine and subsolidus temperatures (600-900 degrees C) indicated by olivine-spinel thermometers align with subsolidus equilibria, emphasizing substantial postcumulus modifications. Therefore, the postcumulus effect must be considered when applying olivine-spinel oxybarometers to intrusive rocks. Back-calculating the spinel Fe-Mg contents to magmatic temperature, the estimated oxidation fugacity (fO(2)) range between FQM - 1.5 and FQM - 3.0, approximately 0.5 to 1.5 Delta FQM more reduced compared to those calculated from the raw spinel composition. Moreover, the fO(2) aligns with results obtained from the olivine-sulfide pair (FMQ - 3.0 to FMQ 0). The considerably reducing state and wide oxidation variation are consistent with the graphite occurrence within the reduced intervals and the systematic fO(2) indicated by olivine V/Sc ratios. Combined with the wide olivine Ni range (200-1500 ppm) and the restricted Ni tenor in coexisting sulfides, those findings imply that the olivine-sulfide interaction was predominantly controlled by fO(2). Diffusion modeling at magmatic temperatures reveals that the core-level Fe-Ni re-equilibration after crystallization requires hundreds of years. The homogeneous olivine composition suggests that re-equilibrium has been achieved in Shitoukengde. However, in fast cooling systems, olivine may record the status approaching olivine-sulfide equilibration, leading to extensive intragrain Ni variation (up to 1000 ppm). This study highlights that extreme Ni depletion in olivine from sulfide-bearing rocks is a sign of reducing conditions. Strongly Ni-rich olivine, such as those in the Kevitsa deposit, could result from interaction with high-Ni tenor sulfides at oxidizing conditions. |
| WOS关键词 | SPINEL OXYGEN GEOBAROMETER ; VOISEYS BAY INTRUSION ; KUNLUN OROGENIC BELT ; ALBANY-FRASER OROGEN ; OXIDATION-STATE ; CO DEPOSIT ; EXPERIMENTAL CALIBRATION ; DIFFUSION-COEFFICIENTS ; PHASE-EQUILIBRIA ; TRACE-ELEMENTS |
| 资助项目 | We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; China Scholarship Council |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:001091159600003 |
| 资助机构 | We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; We thank Wenjun Li, Lihui Jia, and Xu Tang for their assistance in LA-ICP-MS, electron microprobe, and XRF laboratory works. This manuscript was completed during the visit of YJM to Ruhr Bochum University, funded by the China Scholarship Council. The diffu ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110684]  |
| 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 | Mao, Ya-Jing |
| 作者单位 | 1.Sichuan Prov Bur Geol Mineral Explorat & Dev, Geol Team 108, Chongzhou 611200, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Bur Geol Explorat & Dev Qinghai Prov, Xining 810001, 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 | Mao, Ya-Jing,Zheng, Xuyang,Pan, Tong,et al. Redox-controlled olivine-sulfide equilibration of the Shitoukengde Ni-Cu deposit in Qinghai-Tibet Plateau and its implications[J]. MINERALIUM DEPOSITA,2023:23. |
| APA | Mao, Ya-Jing,Zheng, Xuyang,Pan, Tong,Yuan, Fanglin,Huang, Hua-Liang,&Qin, Ke-Zhang.(2023).Redox-controlled olivine-sulfide equilibration of the Shitoukengde Ni-Cu deposit in Qinghai-Tibet Plateau and its implications.MINERALIUM DEPOSITA,23. |
| MLA | Mao, Ya-Jing,et al."Redox-controlled olivine-sulfide equilibration of the Shitoukengde Ni-Cu deposit in Qinghai-Tibet Plateau and its implications".MINERALIUM DEPOSITA (2023):23. |
入库方式： OAI收割
来源：地质与地球物理研究所
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