板庙子金矿床是位于吉林省白山地区一重要的大型岩金矿床. 通过对矿床地质特征的研究表明,该矿床热液矿化阶段可划分为的4个阶段,金的主要富集成矿阶段为Ⅱ、Ⅲ阶段. 流体包裹体研究表明:矿区成矿Ⅱ阶段石英中主要发育气液二相包裹体,包裹体均一温度为190 . 8 ~236. 4 ℃,盐度为3. 6 % ~5. 9 %,密度为0. 87~0. 92 g/cm3;成矿Ⅲ阶段重晶石矿物中主要发育气液二相及单液相2种类型的包裹体,包裹体均一温度为151 . 9~178 . 9 ℃,盐度为1 . 7 % ~4 . 1 %,密度为0. 92~0. 94 g/cm3. 板庙子金矿床成矿流体为中低温、低盐度、较高密度的NaCl-H2 O体系热液,主要来自于大气降水,属中低温热液型金矿床.
Banmiaozi Gold Deposit is an important large rock gold deposit which is located in Baishan region of Ji-lin province. Studies indicate that hydrothermal mineralization stage can be divided into four ore-forming stages and that gold was enriched in stageⅡandⅢ. Fluid inclusion research indicates that in stageⅡ,gas-liquid two-phase in-clusions mainly grow in quartz with a homogenization temperature in the range from 190 . 8 ℃ to 236 . 4 ℃, salinity from 3. 6 % to 5. 9 %,and density from 0. 87 g/cm3 to 0. 92 g/cm3; in stage Ⅲ,gas-liquid two-phase and liquid phase inclusions grow in barites,in which inclusions have a homogenization temperature in the range from 151. 9 ℃ to 178. 9 ℃,salinity from 1. 7 % to 4. 1 %,density from 0. 92 g/cm3 to 0. 94 g/cm3 . Ore-forming fluid in Banmiaozi gold deposit is a medium low temperature,low salinity and relatively high density NaCl-H2 O systematic hydrothermal fluid,mainly stemming from atmospheric precipitation. The deposit belongs to a medium low temperature hydrothermal deposit.
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