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五台山区铁建造金矿经历初生成矿作用和叠加成矿作用。初生成矿作用形成于变质峰期之后 ,与区域变质作用有关。矿石富含水溶液包裹体。包裹体均一温度 171～ 2 55℃ ,压力 0 .12～ 0 .31GPa。流体成分模式Au -H2 S +NaCl-CO2 -H2 O。氢氧同位素具变质水和雨水双重性 ,流体主要来源于变质热液 ,受雨水混合。叠加成矿作用可能受岩浆活动影响 ,矿石富含CO2 包裹体 ,均一温度 30 6～ 385℃ ,压力 0 .6～ 1.0 5GPa ,流体盐度较高 ,成矿流体可能与岩浆热液有关。
Gold formation in Wutai mountainous area undergoing primary metallogenesis and superposition mineralization. The primary mineralization formed after the metamorphic peak, which is related to the regional metamorphism. Ore is rich in aqueous inclusions. The homogenization temperature of the inclusions is 171-255 ℃ and the pressure is 0.12 ~ 0.31GPa. Fluid composition model Au-H2S + NaCl-CO2-H2O. Hydrogen and oxygen isotopes have the dual nature of metamorphic water and rainwater. The fluids are mainly derived from metamorphic hydrothermal fluids and mixed with rainwater. The superposition mineralization may be affected by magmatic activity. The ore is rich in CO2 inclusions with a homogenization temperature of 30 6 ~ 385 ℃ and a pressure of 0.6-6.05 GPa. The fluid salinity is high and the ore-forming fluid may be related to magmatic hydrothermal fluids.