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| 多宝山铅锌矿床地质特征及地球化学研究 | |
| 引用本文： | 杜红星,魏永峰,薛春纪,齐天骄,晋红展,林美英,李胜伟.多宝山铅锌矿床地质特征及地球化学研究[J].新疆地质,2012,30(1):52-57. |
| 作者姓名： | 杜红星 魏永峰 薛春纪 齐天骄 晋红展 林美英 李胜伟 |
| 作者单位： | 1. 中国地质大学,北京 100083;新疆维吾尔自治区地质矿产勘查开发局第八地质大队,新疆阿克苏843000 2. 四川省地质矿产勘查开发局区域地质调查队,四川 双流,610213 3. 中国地质大学,北京,100083 4. 新疆维吾尔自治区地质矿产勘查开发局第八地质大队,新疆阿克苏,843000 |
| 基金项目： | “十二五”国家科技支撑计划课题(2011BAB06B02)项目资助 |
| 摘 要： | 新疆和田县多宝山是西昆仑地区新发现的一处重要铅锌矿床,矿体呈似层状、不规则囊状、脉状,产于白垩系铁隆滩组碳酸盐岩岩溶角砾岩、生物碎屑灰岩中,围岩蚀变主要有碳酸盐化、白云石化、硅化及泥化等.矿石为块状、细脉状、浸染状、角砾状等构造.矿石矿物与脉石矿物中具极相似的微量元素组构,矿石中铅、锌硫化物δ34SV-CDT=-10.55‰～-1.01‰,矿石Pb同位素组成206Pb/204Pb=18.739 8～18.743 3,207Pb/204Pb=15.702 5～15.7040,208Pb/204Pb=39.092 9～39.097 1,成矿物质来源于白垩系铁隆滩组碳酸盐岩.矿石中方解石δ13CPDB=3.44‰～5.09‰,18OSMOW=23.09‰～26.79‰,热液中CO2来自海相碳酸盐岩去碳酸作用.流体包裹体均一温度为207℃～262℃,盐度为6.30%～7.73%,说明成矿流体来源于海水热卤水,矿床具MVT铅锌成矿特点. |
| 关 键 词： | 和田县 多宝山铅锌矿 矿床地质 地球化学 |
Geological and Geochemiscal characteristics of Duobaoshan Pb-Zn Deposit in Hetian,Xinjiang |
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| DU Hong-xing , WEI Yong-feng , XUE Chun-ji , QI Tian-jiao , JIN Hong-zhan , LIN Mei-ying , LI Sheng-wei.Geological and Geochemiscal characteristics of Duobaoshan Pb-Zn Deposit in Hetian,Xinjiang[J].Xinjiang Geology,2012,30(1):52-57. | |
| Authors: | DU Hong-xing WEI Yong-feng XUE Chun-ji QI Tian-jiao JIN Hong-zhan LIN Mei-ying LI Sheng-wei |
| Institution: | 1.Faculty of Geosciences and Resources,China University of Geosciences,Binjing,100083,China;2.No.8Geological party,Xingjiang Bureau of Geology and Mineral Exploration and Development,Akesu,Xinjiang,843000,China; 3.Geology Exploring and District Surveying Team,Shuangliu,Sichuan,610213,China) |
| Abstract: | The Duobaoshan lead-zinc mine in Xinjiang is newly discovered mineral deposit,which formed in biological clastic limestone and karst breccia of Cretaceous Tielong Formation.The ores are often in shapes of stratiform-like,capsular and veinlike.Wall rock alterations are mainly carbonation,dolomitization and silicification.Fine-grained sulfide ore shows blocks-like,fine veinule,disseminated and fractured.The characters of Trace elements and REE in the host and in wall rocks are similar.The composition of S in mine ranges from δ34SV-CDT=-10.55‰～ to 1.01‰,the composition of Pb in ore lies about 206Pb/204Pb=18.739 8～18.743 3,207Pb/204Pb=15.702 5～15.704 0,208Pb/204Pb=39.092 9～39.097 1.Isotope of S and Pb indicates that the source of ore is from limestone of Cretaceious Tielong Formation.The composition of C and O in calcite of ore ranges are between δ13CPDB=3.44‰～5.09‰,18OSMOW= 23.09‰～26.79‰ respectively,which indicate the CO2 in hot fuild mainly from marine carbonate.The chemical composition in fluid inclusion shows that the temperature of ore-forming fluid lies between 207℃～262℃,the salinity lies 6.30%～7.73% NaCl.In summary,the ore-forming fluid is from hot sea brine,ore genesis falls in MVT type. |
| Keywords: | Hetian County Xinjiang Duobaoshan lead-zinc mine Geological character |
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