贵州晴隆锑矿流体混合成矿机制——流体包裹体与稳定同位素证据  

Fluid mixing mineralization mechanism in Qinglong antimony deposit, Guizhou, fluid inclusion and stable isotope evidence

作　　者：王津津 胡煜昭[2] 门文辉[3] WANG Jin-jin;HU Yu-zhao;MEN Wen-hui(Xi'an geological and mineral exploration and Development Institute Co.,Ltd.,Xi'an 710100,China;kunming university of science and technology,Kunming 650093,China;Northwest Nonferrous Geological Research Institute Co.,Ltd.,Xi'an 710054,China)

机构地区：[1]西安地质矿产勘查开发院有限公司,陕西西安710100 [2]昆明理工大学,云南昆明650093 [3]西北有色地质研究院有限公司,陕西西安710054

出　　处：《世界有色金属》2018年第9期147-149,共3页World Nonferrous Metals

基　　金：国家自然科学基金(批准号41362007)

摘　　要：黔西南晴隆锑矿位于南盘江—右江盆地的黔西南坳陷,是我国重要的锑矿产地之一。通过对流体包裹体与稳定同位素研究,结果表明:晴隆锑矿成矿温度范围为125℃~200℃,盐度变化范围为(0.35~2.24)wt%NaCleq,流体密度在当时温度下变化范围为0.88g/cm3~0.95g/cm3;流体包裹体气液相成分结果表明,成矿流体属Ca2^+—Na^+—Cl^-—F^-型体系,气体成分包括H2O为主,其次有CO2、N2、CH4、C2H6、H2S、Ar;成矿流体主要来源于大气降水和地层建造水,二者的混合是晴隆锑矿重要的成矿机制。The Qinglong antimony deposit in Southwest Guizhou is located in the Southwest Guizhou depression of the South pan Youjiang basin.It is one of the important antimony deposits in China.Through the study of fluid inclusions and stable isotopes,the results show that the metallogenic temperature range of Qinglong antimony deposit is 125 C^200 C,the range of salinity variation is(0.35~2.24)wt%NaCleq,and the change range of the fluid density is 0.88g/cm3~0.95g/cm3 at the temperature of that time,and the fluid inclusion fluid phase composition shows that the ore-forming fluid belongs to Ca^2+Na.The^+-Cl^--F^-type system,the gas components include H2O,followed by CO2,N2,CH4,C2H6,H2S,Ar;the ore-forming fluids are mainly derived from atmospheric precipitation and formation water.The mixture of the two is an important metallogenic mechanism of Qinglong antimony mine.

关 键 词：晴隆锑矿 流体混合 成矿机制 流体包裹体 

分 类 号：P611[天文地球—矿床学]