Anatomy and genesis of the world’s largest carbonate-hosted Zn-Pb deposit:New insights from ore characteristics,Zn-Pb-C-O isotopes,and trace element constraints of the Huoshaoyun deposit,Karakorum Range,Xinjiang  

作　　者：Qiang Ke Tao Hong MSantosh Hao Li Guoliang Zhang Hang Li Jianling Wan Tingbin Fan Lianhui Dong Jing Ma Xing-Wang Xu 

机构地区：[1]State Key Laboratory of Lithospheric and Environmental Coevolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [2]Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029,China [3]Space Engineering University,Beijing 101416,China [4]Guangdong Provincial Key Lab of Geodynamics and Geohazards,School of Earth Sciences and Engineering,Sun Yat-sen University,Guangzhou 510275,China [5]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China [6]School of Earth Science and Resources,China University of Geoscience(Beijing),Beijing 100083,China [7]Department of Earth Science,University of Adelaide,Adelaide,SA 5005,Australia [8]Xinjiang Bureau of Geology and Mineral Resources,Urumqi 830000,Xinjiang,China

出　　处：《Geoscience Frontiers》2024年第6期57-79,共23页地学前缘（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.42272075,42250202,41672088,42302073,and 41802093);the Fundamental Research Funds for the Central Universities,Sun Yat-sen University(24llgqb001);well as the 2018 Sino-German(CSC-DAAD)Postdoc Scholarship Program,the UCAS Joint PhD Training Program of China[UCAS(2015)37]a;Foundation of Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences(KLMR2017-10).

摘　　要：The Huoshaoyun deposit in the Karakorum area of NW China is the world’s largest zinc-lead carbonate ore deposit.Here we investigate the genesis of the mineralization based on multiproxy investigations.The deposit contains zinc-lead carbonate and sulfide minerals,with smithsonite(Smt),cerussite(Cer),and sulfides accounting for 85%,10%,and 5%of the total lead and zinc resources,respectively.Three ore-forming stages,involving Smt,Cer,and sulfides ores were summarized.The Smt mineralization is characterized by veined,massive,and stratified Smt forming horizontal sedimentary layered ore and vertical feeder veins similar to the SEDEX-type deposits.The sulfide and Cer veins display typical hydrothermal characteristics and are superimposed on the massive Smt ores.The Smt ores show high Li,Be,Cr,Y,Ba,Nd,Yb,and Zr contents,whereas the Cer veins have extremely high Sr contents(up to 3814–9174 ppm)and low Zr contents(less than 0.01 ppm).Galena and sphalerite show higher Cd concentrations compared to Smt and Cer ores.The Smt ores differ with different spatial locations,with Smt ores formed at the vent haveδ^(66)Zn values of+0.15‰to+0.21‰,the massive Smt formed close to the vent show a value of+0.13‰,and those formed away from the vent show a value of 0.05‰,all values being close to 0.The sulfides haveδ^(66)Zn values of−0.09‰to+0.04‰.The C-O isotopes of Smt ores are similar to both altered and unaltered host limestone,suggesting that the limestone was a potential source for carbon and oxygen.Quartz with veined Smt shows magmatic signatures withδ^(18)OVSMOW of+1.14‰to+2.23‰,high Pb(115–401 ppm)and Zn concentrations(390–997 ppm),whereas quartz associated with sulfide has meteoric fluid signature with the lowestδ^(18)OVSMOW(−14‰to−10.7‰),low Pb(11.6–49.0 ppm)and Zn(18.1–72.8 ppm)concentrations.The temperature of equilibration computed based on oxygen isotope fractionation between Smt and coeval quartz indicate a dual source with that of quartz derived from an aqueous fluid,whereas the sou

关 键 词：Pb-Zn carbonate ores Geochemistry Zn-Pb-C-O isotopes GENESIS Metallogeny 

分 类 号：P618.51[天文地球—矿床学]