江西赣州淘锡坑钨矿床稀土地球化学研究  

REE Geochemistry of the Taoxikeng Tungsten Deposit in Ganzhou,Jiangxi Province

作　　者：杨帆[1] 肖荣阁[1] 白凤军 梁涛 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]河南省有色金属地质勘查总院,河南郑州450052

出　　处：《地质与勘探》2013年第6期1139-1152,共14页Geology and Exploration

基　　金：国家自然科学基金项目(编号40073013)资助

摘　　要：淘锡坑钨矿床是赣南地区典型的云英岩型黑钨矿矿床。本文重点研究震旦系浅变质砂板岩围岩、成矿花岗岩及含矿云英岩、石英脉稀土元素地球化学特征,通过对岩石化学组成、稀土元素配分模式及特征值LREE/HREE-REE、δEu-LREE/HREE相关性的分析,对比现代海相、陆相沉积物稀土元素组成特点,确定震旦系浅变质砂板岩原岩为浅海相陆源沉积岩;成矿花岗岩属于陆壳熔融成因花岗岩;含矿云英岩、石英脉及成矿物质属于岩浆期后热液产物。The Taoxikeng tungsten deposit, located in southern Jiangxi Province, is a typical greisen-type wolframite deposit. This paper focuses on REE geochemistry of the Sinian sand-slates, ore-forming granites, mineralization greisen veins and the quartz veins in this deposit. Based on analyses of petrochemical compositions, REE distribution patterns and characteristic values （including EREE-LREE/HREE and ~Eu-LREE /HREE）, comparisons with REE compositions of modern marine and terrestrial sediments, we infer that protoliths of the Sinian sand-slates are shallow marine terrlgenous sedimentary rocks, and the genesis of ore-forming granites is related to melting of the continental crust. The mineralization greisen veins, quartz veins and oreforming materials are all the products of postmagmatism hydrothermal fluid.

关 键 词：淘锡坑钨矿床 云英岩 黑钨矿 稀土地球化学 江西 

分 类 号：P581[天文地球—岩石学] P595[天文地球—地质学]