【摘要】 本文论述了北祁连西段鹰咀山金矿床区域地质背景、矿床成矿地质条件、矿体特征、围岩蚀变、矿化和矿床地球化学特点,认为金矿床主要受多级断裂系统和火山碎屑岩控制,金矿化与蚀变碎裂岩带关系密切,是一种蚀变碎裂岩型金矿床。流体包裹体测温结果为中高温,成分以低盐度以及富CO2和H2O为特征;稳定同位素组成表明,成矿流体早期以岩浆水为主,晚期混有大量大气降水。更多还原

【Abstract】 This paper gives a detailed description of the regional geological setting, metallogenic conditions, characteristics of ore bodies, alteration of wall rock, gold mineralization, and geochemistry of the Yingzuishan gold deposit. The deposit is mainly controlled by multi-grade fault system and pyroclastic rock. The gold mineralization is closely related to the cataclastic rock belt and the gold deposit is an alteration cataclastic rock type of gold deposit. The results of study on the homogenization temperature of fluid inclusions reveal that the ore-forming fluids characterized by middle-high temperature, low salinity and rich in CO2 and H2O. The data of stable isotope suggest that the ore-forming fluids is mainly from magmatic water in the early stage of mineralization and much meteoric water were mixed into the ore-forming system during the late stage.更多还原