摘要
西准噶尔包古图地区已发现20多个金矿床和矿点,它们与海西期发育的闪长质小岩体群和脉岩群有密切的成因联系。为石英脉-网脉型矿脉,其分布受北东向裂隙控制,无论侧向还是纵向都呈平行排列和成群出现。含金矿物是自然金和银金矿。经石英和黄铁矿的气液包裹体测试表明,金矿化温度170～30s℃,平均222℃,矿化条件为还原和酸性环境;矿液主要为岩浆热液和大气降水。
More than 20 gold deposits and occurrences have been discovered in Baogutu area, est unggar. They are closely related to Hercynian dioritic intrusive groups and vein groups. Ore eins are of quartz vein type and stockwork type, which are in parallel arrangement both aterally and vertically with their distrbution strictly controlled by NE-trending fissures. ecrepitation temperatures of inclusions in quartz and pyrite show that mineralization emperatures of native gold are 170～305℃,averaging 222℃.Chemical composition of ore minerals lso implies that the mineralization temperature of native gold is low. Thermoelectricity of yrite is mainly of P type and, next, mixed P and N type. Fluid inclusion composition of inerals indicates a reducing and acid mineralization environment.Hydrogen and oxygen isotopic omposition demonstrates that mineralizing fluids are magmatic water and meteoric water.
出处
《矿床地质》
CAS
CSCD
北大核心
1992年第2期154-164,共11页
Mineral Deposits
