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Porphyry to epithermal transition at the Rongna Cu-(Au) deposit, Tibet: Insights from H-O isotopes and fluid inclusion analysis

文献类型：期刊论文

作者Zhang, Xia-Nan1,6,7; Li, Guang-Ming1,5; Qin, Ke-Zhang1,4,5; Lehmann, Bernd6; Li, Jin-Xiang2,3; Zhao, Jun-Xing1,5
刊名ORE GEOLOGY REVIEWS
出版日期2020-08-01
卷号123页码:17
ISSN号0169-1368
关键词Porphyry-high sulfidation epithermal deposit Fluid evolution H-O isotopes Fluid inclusion composition Rongna Tibet
DOI10.1016/j.oregeorev.2020.103585
英文摘要The giant Rongna Cu-(Au) deposit is a recently discovered low-grade composite porphyry-high sulfidation epithermal system in the Duolong ore district of central Tibet. We present fluid inclusion petrography, micro-thermometry, stable isotope (H, O), and fluid-compositional data (LA-ICP-MS) to constrain the fluid evolution of the Rongna deposit. Hydrothermal quartz and muscovite formed in the porphyry stage yielded fluid values of 8.2 +/- 1.0 parts per thousand delta O-18(H2O), and -75 +/- 19 parts per thousand delta D-H2O (n = 13). Pyrophyllite, kaolinite, and dickite define the isotopic composition of the epithermal fluid (delta O-18(H2O) = 2.2-8.3 parts per thousand, delta D-H2O = - 87 similar to 45 parts per thousand). This epithermal fluid of lighter oxygen isotope and heavier hydrogen isotope composition still has a magmatic-hydrothermal signature and rules out any significant involvement of meteoric water. The very high concentration of Cu in fluid inclusions from epithermal veins and the common sulfide replacement features suggest that the epithermal mineralization may be partially related with the dissolution and re-precipitation of the porphyry-stage sulfides. Combined with fluid inclusion petrography and microthermo-metric data, it is indicated that a single-phase fluid exsolved from magma at depth and underwent boiling and cooling, forming the porphyry alteration and mineralization. With decrease of temperature and pressure, the ascending vapor contracted into acid aqueous fluid, leaching downward to develop the telescoped high-sulfidation epithermal alteration and mineralization.
WOS关键词FEMTOSECOND LASER-ABLATION ; CU-AU DEPOSIT ; LA-ICP-MS ; MAGMATIC-HYDROTHERMAL FLUIDS ; NUJIANG METALLOGENIC BELT ; COPPER-MOLYBDENUM DEPOSIT ; U-PB AGES ; HYDROGEN ISOTOPE ; FUJIAN PROVINCE ; TECTONIC EVOLUTION
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0806] ; Natural Science Foundation Project[41472074] ; Natural Science Foundation Project[41672091] ; East China University of Technology[DHBK2019280] ; State Key Laboratory of Nuclear Resources and Environment[Z1908] ; University of the Chinese Academy of Sciences[UCAS[2015]37] ; Deutscher Akademischer Austausch Dienst (DAAD)[UCAS[2015]37]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:000540196600010
资助机构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) ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; 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) ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; 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) ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; 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) ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; Natural Science Foundation Project ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; State Key Laboratory of Nuclear Resources and Environment ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; University of the Chinese Academy of Sciences ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD) ; Deutscher Akademischer Austausch Dienst (DAAD)
源URL[http://ir.iggcas.ac.cn/handle/132A11/96890]  
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Zhang, Xia-Nan; Li, Guang-Ming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
6.Tech Univ Clausthal, Mineral Resources, Adolph Roemer Str 2A, D-38678 Clausthal Zellerfeld, Germany
7.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xia-Nan,Li, Guang-Ming,Qin, Ke-Zhang,et al. Porphyry to epithermal transition at the Rongna Cu-(Au) deposit, Tibet: Insights from H-O isotopes and fluid inclusion analysis[J]. ORE GEOLOGY REVIEWS,2020,123:17.
APA Zhang, Xia-Nan,Li, Guang-Ming,Qin, Ke-Zhang,Lehmann, Bernd,Li, Jin-Xiang,&Zhao, Jun-Xing.(2020).Porphyry to epithermal transition at the Rongna Cu-(Au) deposit, Tibet: Insights from H-O isotopes and fluid inclusion analysis.ORE GEOLOGY REVIEWS,123,17.
MLA Zhang, Xia-Nan,et al."Porphyry to epithermal transition at the Rongna Cu-(Au) deposit, Tibet: Insights from H-O isotopes and fluid inclusion analysis".ORE GEOLOGY REVIEWS 123(2020):17.

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来源：地质与地球物理研究所

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