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Biotite composition as a tracer of fluid evolution and mineralization center: a case study at the Qulong porphyry Cu-Mo deposit, Tibet

文献类型：期刊论文

作者Yu, Kelong2,3,5; Li, Guangming2,3,5; Zhao, Junxing2,3; Evans, Noreen J.1; Li, Jinxiang; Jiang, Guangwu6; Zou, Xinyu2,3,5,7; Qin, Kezhang2,3,5; Guo, Hu4
刊名MINERALIUM DEPOSITA
出版日期2022-01-04
页码23
关键词Biotite Chemical composition Fluid evolution Porphyry Cu-Mo deposit Qulong deposit
ISSN号0026-4598
DOI10.1007/s00126-021-01085-w
英文摘要Porphyry Cu-Mo deposits are magmatic-hydrothermal deposits in which sulfide and oxide minerals precipitate from aqueous solutions. However, many questions remain about the composition and evolution of the magmatic-hydrothermal fluids responsible for mineralization. In response to this knowledge gap at the Qulong porphyry Cu-Mo deposit, Tibet, we present a comprehensive major and trace element dataset for biotite (including halogens) from Qulong to elucidate magmatic-hydrothermal fluid compositions and fluid evolution. Based on genesis and occurrence, biotite is divided into primary (igneous), re-equilibrated (igneous modified by hydrothermal fluids), and secondary (hydrothermal) types. All studied biotite grains are Mg-rich, and X-Mg values (0.59-0.90) increased during fluid evolution, perhaps controlled by high oxygen fugacity (fO(2)) and sulfur fugacity (fS(2)) in the magmatic-hydrothermal fluids. The IV(F) and IV(Cl) values and halogen fugacity of biotite indicate that Cl-rich fluids were dominant during early magmatic-hydrothermal evolution, while later fluids were enriched in F. This is consistent with early Cu and late Mo enrichment in the Qulong deposit. We propose a fluid evolution model based on in situ major and trace element data and cross-cutting relationships between the intrusions and the veins. Iron, Ti, Co, Ni, Zn, and Cl contents decreased, while Mg, Si, Al, Sn, Ge, and F contents increased during the evolution of the magmatic-hydrothermal fluid. Importantly, the increase in Fe, Ti, Co, Zn, and Cl and decrease in Mg, Ge, and F contents in hydrothermal biotite as the core of the deposit is approached (extending to similar to 2.5 km depth) may prove to be an important indicator of high-grade mineralized zones. Finally, this study shows that systematic spatial variations in hydrothermal biotite chemistry can potentially be used as a prospecting tool for porphyry deposits worldwide.
WOS关键词MAGMATIC-HYDROTHERMAL EVOLUTION ; LA-ICP-MS ; F-CL-OH ; COPPER-DEPOSIT ; ORE-DEPOSIT ; CHLORIDE COMPLEXES ; CENTRAL PROVINCE ; SOUTHERN TIBET ; SILICATE MELTS ; LHASA TERRANE
资助项目National Natural Science Foundation of China[41972089] ; National Natural Science Foundation of China[41872086] ; National Natural Science Foundation of China[41972083] ; National Key R&D Program of China[2016YFC0600308]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000737729700002
出版者SPRINGER
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 Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program 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 Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program 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 Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program 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 Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/103944]  
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Li, Guangming
作者单位1.Curtin Univ, Sch Earth & Planetary Sci, John Laeter Ctr, Perth, WA 6945, Australia
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
4.Tianjin Geol Res Ctr, Geol Survey China, Tianjin 300170, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Tibet Julong Copper Ind Co Ltd, Lhasa 850000, Peoples R China
7.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst, Resources & Environm TPESRE, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Kelong,Li, Guangming,Zhao, Junxing,et al. Biotite composition as a tracer of fluid evolution and mineralization center: a case study at the Qulong porphyry Cu-Mo deposit, Tibet[J]. MINERALIUM DEPOSITA,2022:23.
APA Yu, Kelong.,Li, Guangming.,Zhao, Junxing.,Evans, Noreen J..,Li, Jinxiang.,...&Guo, Hu.(2022).Biotite composition as a tracer of fluid evolution and mineralization center: a case study at the Qulong porphyry Cu-Mo deposit, Tibet.MINERALIUM DEPOSITA,23.
MLA Yu, Kelong,et al."Biotite composition as a tracer of fluid evolution and mineralization center: a case study at the Qulong porphyry Cu-Mo deposit, Tibet".MINERALIUM DEPOSITA (2022):23.

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来源：地质与地球物理研究所

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