吉林汪清刺猬沟金矿床地质特征及矿床成因

Geological characteristics and genesis of Ciweigou gold deposit in Wangqing county,Jilin province

刺猬沟金矿床为产于中侏罗统屯田营组安山质火山岩地层之中,受断裂构造控制的石英-方解石脉型金矿床。流体包裹体研究表明,该矿床矿脉石英中主要发育气液二相及液相包裹体,气液二相包裹体均一温度为168.9-246.8℃,盐度为1.56%-5.7%,表明成矿流体属均一的低温、低盐度热液,其来源主要为大气降水,矿床属大气降水热液成因类型。

Occurred in andesite volcanic strata of Tuntianying group of the middle Jurassic period,Ciweigou gold deposit is a quartz-calcite vein type deposit controlled by faults.Fluid inclusion study showed that mainly air-liquid two-phase and liquid phase inclusions bore in quartz veins.The homogenization temperature of the two-phase inclusions ranges from 168.9 ℃ to 246.8 ℃ and the salinities range from 1.56 % to 5.7 %.It is revealed that the ore-forming fluid was a low temperature,low salinity and homogeneous kind of hydrothermal solution.It was mainly of meteoric origin and the deposit is of meteoric hydrothermal type.