滇西北安乐铅锌矿床流体包裹体研究  

Fluid Inclusions of the Anle Pb-Zn Deposit in Northwestern Yunnan Province,China

作　　者：王芳[1,2] 黄智龙[2,3] 李波[1] 丁伟[2,3,4] 朱明波[1] 

机构地区：[1]昆明理工大学国土资源学院,云南昆明650093 [2]中国科学院地球化学研究所矿床地球化学国家重点实验室,贵州贵阳550002 [3]云南省矿产资源开发工程技术研究中心,云南昆明650218 [4]中国科学院研究生院,北京100049

出　　处：《矿物学报》2011年第3期441-448,共8页Acta Mineralogica Sinica

基　　金：国家"973"计划项目(2007CB411402);中国科学院重要方向项目(KZCX2-YW-Q04-05);矿床地球化学国家重点实验室自主课题(KCZX20090103)

摘　　要：安乐铅锌矿床位于三江地区的中甸断凹,是滇西北地区一处重要的铅锌矿。本文通过对该矿床与矿石密切共生的石英中流体包裹体的类型、特征、均一温度、盐度、密度、成矿压力以及流体包裹体中气液相成分的分析,探讨了流体性质、演化及矿床成因。结果表明,该区流体主要属于CO2-H2O-NaCl体系,均一温度范围在130～370℃之间,盐度在3.00%～12.75%NaCl之间,由成矿压力推算的成矿深度为1.37～3.77 km。矿床特征及包裹体特征与造山型矿床相似,推测该矿床属于"同造山"构造体制下发育的成矿系统。The Anle Pb-Zn deposit, located in the Zhongdian rift of the Three Rivers, northwest Yunnan Province, is one of the important Pb-Zn deposits in China. Based on the study of the fluid inclusions in quartz closely associated with the ore deposit, including the types, characteristics, homogenization temperature, salinity, density, pressure and gaseous-liquid compositions, the characteristics of ore-forming fluid, fluid evolution and the origin of the Anle Pb-Zn deposit were detailedly discussed. The results show that the ore-forming fluids in the area mainly belong to CO2-H20-NaC1 system, with the homogenization temperature of 130 - 370°C and salinity of 3.00% - 12. 75%. The mineralization depth of the deposit is deduced to be 1.37 - 3.77 km according to the ore-forming pressure. Be- cause the similar mineralization types and fluid inclusions characteristics between Anle Pb-Zn deposit and the orogen- ic-type deposits, the Anle Pb-Zn deposit may be associated with synorogenie tectonic process.

关 键 词：流体包裹体 铅锌矿 造山型矿床 滇西北 

分 类 号：P579[天文地球—矿物学] P611[天文地球—地质学]