广西珊瑚钨锡矿床流体包裹体研究  

Study on the Fluid Inclusions of the Shanhu Tungsten-Tin Deposit in Guangxi

作　　者：喻静雯[1] 方科[2] 陈雪源[1] 杨明德[2] 刘运锷[2] 曾南石[1] 陈探[1] 

机构地区：[1]桂林理工大学地球科学学院 [2]中国有色桂林矿产地质研究院

出　　处：《现代矿业》2015年第9期92-95,116,共5页Modern Mining

摘　　要：长营岭钨锡石英脉为广西珊瑚钨锡矿区最具工业意义的矿化类型。在详细的岩相学观察的基础上,对代表性含矿石英脉中石英的流体包裹体进行了系统显微测温和激光拉曼光谱分析,结果表明:1石英中的流体包裹体主要为富液体包裹体,少量纯液体包裹体以及极少量的含CO2三相包裹体;2主成矿阶段均一温度主要集中于230~250℃温区,且由矿段中部展示出均一温度呈SW—NE向逐渐降低的变化趋势;3冰点温度为-3.7^-5.1℃,盐度为6%~7%;4流体组分主要为H2O,含少量CO2和CH4等,说明珊瑚矿区成矿流体背景为较封闭的低CO2、低盐度的中温热液体系,成矿流体由矿区中部向NE方向运移。上述研究成果对于进一步研究区内成矿规律具有一定的参考价值。The Shanhu mine is the important mineralization type with industrial significance in Guangxi province. Based on detailed petrographic observation,the fluid inclusions of the representative quartz veins containing ores are conducted microscopic test and laser raman spectroscopy analysis. The research results show that： 1 the rich fluid inclusions,a small amount of pure liquid inclusions and very small amount of three-phase inclusions containing CO2 are the main types of the fluid inclusions in quartz;2the uniform temperature of the main metallogenic stage is fasten on the region with the temperature of230 ~ 250 ℃,the uniform temperature with the trend of reducing gradually in the direction of SW—NE,which is displayed by the middle of ore block in mining area; 3 the freezing point temperature is from-3. 7 ℃ to-5. 1 ℃,the salinity is from 6% to 7%; 4H2 O is the main component of the fluid inclusions compositions,a small amount of CO2 and CH4are also contained in the fluid inclusions compositions,therefore,it indicated that the closed middle-warm fluid system with low contents of CO2 and salinity is the ore-forming fluid background in Shanhu mining area,the ore-forming fluid is migrated from the central area of the mining area to the NE direction. The above research results can provide some reference for studying the metallogenic regularity in the mining area.

关 键 词：脉状钨矿床 流体包裹体 激光拉曼光谱分析 均一温度 盐度 冰点温度 成矿规律 

分 类 号：P618.67[天文地球—矿床学] P618.44[天文地球—地质学]