赣中徐山钨矿床矿物流体包裹体地球化学特征及其地质意义  

Geochemical Characteristics of Mineral Fluid Inclusions of Xushan Tungsten Deposit in the Middle Jiangxi Province and Its Geological Implications

作　　者：胡聪聪[1,2] 潘家永[1] 张勇[1] 刘国奇[1] 刘颖[1] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,江西南昌330013 [2]安徽地质矿产勘查局325地质队,安徽淮北2350337

出　　处：《东华理工大学学报（自然科学版）》2013年第S1期1-8,共8页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金资助项目(40872072;40963004);中国地质调查局矿调项目(1212011085395);核资源与环境重点实验室开放基金(NRE1110;NRE1111);东华理工大学校长基金(DHXK201307;DHXK201308)

摘　　要：赣中徐山钨矿属于典型的"三位一体"的矿床,即集石英脉型、矽卡岩型、花岗岩型钨矿床于一体的矿床类型。其符合赣南-粤北地区的典型的"五层楼+地下室"的成矿模式。通过对该矿床石英脉型钨矿床矿物流体包裹体进行岩相学观察和显微测温分析,探讨成矿流体地球化学特征,结果显示,成矿流体属中高温(170~210℃)中低盐度(7%~13%)、低密度(0.8~0.95 g/cm3)流体类型。并与赣南、赣北典型的钨矿床进行对比分析,对比显示成矿流体性质及成矿地质条件的差异性可能是造成赣南伴生锡为主,而赣北伴生铜为主的原因。Xushan tungsten deposit is a typical deposit of'the Trinity',which is comprised of three types of orebodies,i. e. quartz vein type,skarn type and granite type in the middle Jiangxi Province. It conforms to the 'Five levels + Basement'model of the Gannan-Yuebei region. Based on detailed petrographic observations and microthermometry studies of mineral fluid inclusions in quartz vein type tungsten deposit of Xushan tungsten,to discuss the geochemical characteristics of the metallogenic fluid,the results show that metallogenic fluid is the fluid type of the medium-high temperature( 170 ~ 210 ℃),medium-low salinity( 7% ~ 13%),low density( 0. 8 ~ 0. 95 g / cm3). And compared with the typical Gannan and Ganbei's tungsten deposit,the result shows the difference of metallogenic fluid characterization and metallogenic geological condition is maybe the reason of the deposit primarily associated Tin in South Jiangxi and primarily associated Cu in North Jiangxi.

关 键 词：矿物流体包裹体 地球化学特征 徐山钨矿床 

分 类 号：P618.67[天文地球—矿床学]