赣南西华山钨矿床流体包裹体研究  

Fluid inclusions of Xihuashan tungsten deposit in Southern Jiangxi

作　　者：许泰[1] 余岚[1] 许靖 王勇[3] 朱秀兰[1] 王玉凤[1] 杨日丽[1] 姬安召[1] 齐生芝 

机构地区：[1]陇东学院能源工程学院,甘肃庆阳745000 [2]庆阳市国营华池林业总场,甘肃庆阳745000 [3]东华理工大学,江西抚州344000

出　　处：《矿产与地质》2015年第6期826-833,共8页Mineral Resources and Geology

基　　金：庆阳市科技支撑计划项目(KG201307)

摘　　要：文章选取含矿石英脉石英中流体包裹体为研究对象,在详细岩相学观察的基础上,将西华山钨矿床流体包裹体分为NaCl-H2O包裹体(Ⅰ型)、NaCl-H2O-CO2包裹体(Ⅱ型)和纯液相CO2(Ⅲ型)包裹体三种类型,采用激光拉曼光谱测试技术对Ⅰ型和Ⅱ型流体包裹体进行成分分析,对NaCl-H2O包裹体(Ⅰ型)利用流体包裹体组合(FIA)的方法进行重点研究。结果表明:西华山钨矿床成矿流体气相成分主要为CO2,存在少量的CH4和N2挥发分气体,成矿流体液相成分主要为H2O和CO2,部分CO2溶解于H2O;根据均一温度的特点将西华山钨矿床成矿流体分为四期,前三期为成矿期热液活动,形成原生包裹体;最后一期为成矿期后热液活动,形成次生包裹体。This paper chooses the fluid inclusions in quartz of ore-bearing quartz veins as its object of study.Based on detailed petrographic observations,fluid inclusions of Xihuashan tungsten deposit are categorized into three types:NaCl-H2 O inclusion(type I),NaCl-H2O-CO2inclusion(type II)and pure liquid CO2inclusions(type III).Laser Raman spectroscopy analysis is applied on type I and II fluid inclusions,and fluid inclusion assemblage(FIA)method is adopted in focused research on NaCl-H2 O inclusion(type I).It is su ggested that the main gas phase composition of ore-forming fluid is CO2,and small amount of CH4 and N2also exist.The liquid phase composition of ore-forming fluid is mainly H2 O and CO2,and a certain amount of CO2 is dissolved in H2 O.According to the feature of homogenization temperature,the ore-forming fluid of Xihuashan tungsten deposit is divided into four stages.The first three stages are metallogenic hydrothermal activities,when primary inclusions are formed.The last stage is hydrothermal activity after mineralization period,when secondary inclusions are formed.

关 键 词：钨矿床 流体包裹体 流体包裹体组合 均-温度 

分 类 号：P617.9[天文地球—矿床学]