Geology,Mineralogy,and Isotopic Characteristics of the Zhonghe Ag-Pb-Zn Deposit,Western Henan Province,Central China

作     者：Jiannan Xu Changqian Ma Shuo Yin Yunzhen Chang Huimin Jia Zhongjie Wang Liangliang Shi Jiannan Xu;Changqian Ma;Shuo Yin;Yunzhen Chang;Huimin Jia;Zhongjie Wang;Liangliang Shi

作者机构：State Key Laboratory of Geological Processes and Mineral ResourcesSchool of Earth SciencesChina University of GeosciencesWuhan 430074China State Key Laboratory of Nuclear Resources and EnvironmentEast China University of TechnologyNanchang 330013China No.1 Institute of Geological and Mineral Resources SurveyHenan Bureau of Geo-Exploration&Mineral DevelopmentLuoyang 471000China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2022年第33卷第1期

页      面：177-192页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：financially supported by the National Natural Science Foundation of China(No.41972066) the Mineral Prospecting of Zhonghe silver polymetallic deposit in Luoning County,Henan Province 

主　　题：S-Pb isotopes Ag-Pb-Zn deposit metal source isotopes ore deposit geology 

摘      要：Located in Luoning County,western Henan Province,Central China,the Zhonghe Ag-Pb-Zn ore field,is a newly discovered deposit in the Xiaoshan *** bodies controlled by NNW Faults occur as veins within the Paleoproterozoic Xiong’er Group or the Early Cretaceous porphyritic *** that the Zhonghe deposit has been covered by thick Quaternary sediments,the paragenetic mineral assemblage was determined mainly by microscopic observations,including the quartzsiderite-pyrite alteration (StageⅠ),polymetallic sulfide precipitation (StageⅡ),silver mineralization(Stage Ⅲ),and quartz-carbonate stage (StageⅣ).The host minerals for silver are diverse,such as freibergite,pyrargyrite,polybasite,argyrodite,canfieldite,argentite,and native silver,whereas those for Pb and Zn are galena and sphalerite,*** order to constrain the ore-forming components of the Zhonghe deposit,a combined in-situ analysis was conducted on represented sulfides from StageⅡand Stage Ⅲ.In-situ δ^(34)S values of the analyzed sulfides,including the pyrite,chalcopyrite,sphalerite,and galena,display a relatively narrow range (0.90‰-5.0‰),which is close to magmatic sulfur *** ^(206)Pb/^(204)Pb and^(207)Pb/^(204)Pb ratios show a narrow range (17.140-17.360 and 15.385-15.490),whereas the ^(208)Pb/^(204)Pb ratios exhibit a broad variation (36.601-37.943),indicating a contamination of the Xiong’er *** of geochronological and geochemical data from the Xiaoshan District,we contend that the ore-forming materials of the Zhonghe Ag-Pb-Zn deposit are originated from the lower crust,which has presumably been influenced by the large-scale lithospheric delamination of the eastern North China Craton during the Early *** consideration of the geological setting,mineralogy,and geochemical compositions,we suggest that the Zhonghe Ag-Pb-Zn deposit is characterized as intermediate sulfidation type epithermal deposit,and may be a potential exploration target for porphyry Mo-Cu deposi