青海省雁石坪铜铅锌多金属矿床地质特征及成因分析

青海省雁石坪铜铅锌多金属矿床位于西南三江成矿带北段西延部分,矿(化)体赋存于构造破碎带及两侧岩脉中,矿体形态走向与构造走向基本一致,呈似层状、脉状产出,成矿组合为铅-锌-铜-银,流体包裹体显微测温结果表明多金属矿成矿流体为中低温(以低温为主)、中等盐度、中等密度流体。矿床成因类型为火山喷流沉积-热液改造型;热液主要来源于岩浆热液。

Geological features and genesis analysis of Yanshiping copper lead zinc polymetallic deposit in Qinghai Province

The Yanshiping Cu Pb Zn polymetallic deposit in Qinghai Province is located in the West extension of the north section of the Sanjiang metallogenic belt in Southwest China. The ore( mineralized) body occurs in the structural fracture zone and the rock veins on both sides. The ore body trend is basically the same as the structural trend,which is similar to layered and vein like. The ore-forming combination is lead zinc copper silver. The results of micro temperature measurement of fluid inclusions show that the ore-forming fluid of the polymetallic deposit is of medium low temperature( Mainly low temperature),medium salinity and medium density fluid. The genetic type of the deposit is volcanic exhalation sedimentation hydrothermal reformation,and the hydrothermal fluid mainly comes from magmatic hydrothermal solution.