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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 lead-zinc deposit is located in the Zhongdian fault depression in Sanjiang area and is an important lead-zinc mine in northwestern Yunnan. In this paper, by analyzing the types, characteristics, homogenization temperature, salinity, density, metallogenetic pressure and gas-liquid composition of fluid inclusions in quartz closely intergrowth with the ore, the properties, evolution and Genesis of the deposit. The results show that the fluids mainly belong to the CO2-H2O-NaCl system, the homogenization temperature ranges from 130 to 370 ℃ and the salinity ranges from 3.00% to 12.75% NaCl. The mineralization depth is 1.37 ~ 3.77 km. The ore deposit characteristics and the characteristics of inclusions are similar to those of the orogenic deposit, suggesting that the deposit belongs to the metallogenic system developed under the “syn-orogenic” tectonic system.