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五星山金矿床是位于延边地区的浅成低温热液金矿床,矿体产于碱长花岗岩、角闪安山岩、石英-黄铁矿脉和石英-方解石脉。研究表明,热液金矿化可分为黄铁矿-石英阶段,黄铜矿-方铅矿-闪锌矿-黄铁矿-石英阶段和石英-方解石阶段。流体包裹体研究表明,五星山金矿床主成矿阶段石英中发育气液二相流体包裹体;气液二相包裹体均一温度为134.6~324.7℃,盐度为1.16%~7.53%,密度0.73~0.94 g/cm3。包裹体岩相学、显微测温及氢、氧同位素综合研究结果表明,成矿流体为大气降水与岩浆热液混合流体。综合研究表明,五星山金矿床属浅成低温热液成因类型。

Wuxingshan Gold Deposit is an epithermal gold deposit located in Yanbian District .Research shows that the mineralization can be divided into three metallogenic stages:pyrite-quartz phase ,chalcopyrite-galena-sphaler-ite-pyrite-quartz phase , and quartz-calcite phases .The study of fluid inclusions shows that gas-liquid two-phase fluid inclusions developed in quartz of the main mineralization in Wuxingshan Gold Deposit .Fluid inclusions indicate that the gas-liquid two-phase homogenization temperature ranges from 134.6 ℃ to 324.7 ℃,while salinity varies from 1.16 %to 7.53%,and density from 0.73 g/cm3 to 0.94 g/cm3 .Comprehensive study of petrography ,microthermom-etry as well as hydrogen ,oxygen and carbon isotopes of fluid inclusions showed that the ore-forming fluid is a mixed fluid which is made up of atmospheric precipitation and magmatic fluids .It is concluded that Wuxingshan Gold Deposit is epithermal in origin .

参考文献

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