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地球学报  2003 

北祁连西段鹰咀山蚀变碎裂岩型金矿床控矿因素和成因

Keywords: 蚀变碎裂岩型金矿床,控矿因素,成因,鹰咀山

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Abstract:

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。

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