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In-situ geochemical and sulfur isotope signature of pyrite: Constraints on ore-forming processes of the Qulong Cu-Mo deposit, Tibet

文献类型：期刊论文

作者Yu, Kelong2,3; Li, Guangming2,3; Hollings, Pete4; Li, Jinxiang5; Zhao, Junxing2; Jiang, Guangwu1; Zou, Xinyu2; Qin, Kezhang2,3; Gao, Jun2,3
刊名ORE GEOLOGY REVIEWS
出版日期2023-11-01
卷号162页码:18
关键词Pyrite Trace elements Sulfur isotopes Qulong deposit Porphyry Cu-Mo deposit Fluid evolution
ISSN号0169-1368
DOI10.1016/j.oregeorev.2023.105639
英文摘要The post-collisional Qulong porphyry Cu-Mo deposit is the largest in the Gangdese Cu belt, southern Tibet. Despite many previous studies, the evolution of ore-forming fluids in the Qulong deposit remains controversial. Pyrite-bearing veins at Qulong can be divided into seven subclasses, including Mt-type, Bt-type, A-type, B-type, C-type, D-type, and E-type veins. To decipher the evolution of magmatic-hydrothermal fluids at Qulong, in situ LA-ICP-MS trace element and sulfur isotope compositions of pyrites from different veins were analyzed. The delta 34S values (+1.01%o to + 4.28%o) for pyrites indicate a magmatic sulfur source and the high Se/S ratios of pyrite at Qulong are consistent with hydrothermal fluids being mainly magma-derived. The low Co/Ni ratio (0.01-0.1) of pyrite in Mt-type vein suggests that the earliest magmatic-hydrothermal fluids may have contributed from mafic magma injection. From Mt- to Bt- to A-type veins, the delta 34S values in the hydrothermal fluids decrease as the temperature decreases, whereas the Cu and Co contents increase and the As and Ni contents decrease. In B- and C-type veins, the relatively high and stable Co and Ni contents and the range of delta 34S isotope values in pyrite indicate the existence of multiple-stages of magmatic-hydrothermal fluids during the main mineralization period. During the late stages of mineralization, the decrease of Co, Ni and As contents and increase of Cu in pyrite in D- and E-type veins, as well as the narrow range of delta 34S values, may be due to decreasing temperature as a result of fluid dilution caused by mixing with meteoric waters. The slightly negative delta 34S fluid values for chalcopyrite (-1.56%o to -0.75%o) in sample Q711-1968 also suggests the addition of external water at Qulong.
WOS关键词LA-ICP-MS ; PORPHYRY COPPER-DEPOSIT ; MAGMATIC-HYDROTHERMAL EVOLUTION ; TRACE-ELEMENT COMPOSITIONS ; MASSIVE SULFIDE DEPOSITS ; FLUID EVOLUTION ; GOLD DEPOSIT ; MOLYBDENUM DEPOSIT ; SEDIMENTARY PYRITE ; SOUTHERN TIBET
资助项目National Natural Science Foundation of China[41972089] ; National Natural Science Foundation of China[41972083] ; National Natural Science Foundation of China[41872086] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP[2019QZKK0806]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:001083542800001
出版者ELSEVIER
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 ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP
源URL[http://ir.iggcas.ac.cn/handle/132A11/110751]  
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.Tibet Julong Copper Ind Co Ltd, Lhasa 850000, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Lakehead Univ, Geol Dept, Thunder Bay, ON P7B 5E1, Canada
5.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Resources, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yu, Kelong,Li, Guangming,Hollings, Pete,et al. In-situ geochemical and sulfur isotope signature of pyrite: Constraints on ore-forming processes of the Qulong Cu-Mo deposit, Tibet[J]. ORE GEOLOGY REVIEWS,2023,162:18.
APA Yu, Kelong.,Li, Guangming.,Hollings, Pete.,Li, Jinxiang.,Zhao, Junxing.,...&Gao, Jun.(2023).In-situ geochemical and sulfur isotope signature of pyrite: Constraints on ore-forming processes of the Qulong Cu-Mo deposit, Tibet.ORE GEOLOGY REVIEWS,162,18.
MLA Yu, Kelong,et al."In-situ geochemical and sulfur isotope signature of pyrite: Constraints on ore-forming processes of the Qulong Cu-Mo deposit, Tibet".ORE GEOLOGY REVIEWS 162(2023):18.

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来源：地质与地球物理研究所

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