我国造山型金矿床的围岩蚀变、流体包裹体特征综合分析

General Analysis on the Characteristics of Wall-rock Alteration and Fluid Inclusion in Gold Ore-system in China

主要依据我国现有的造山型金矿围岩蚀变的现状,来探究与金矿化密切相关的蚀变特征.在流体包裹体中方面,通过定性的分析,研究发现造山型金矿床中,流体成分为低盐度的碳质流体.CO2的初熔温度严格限于-62.5至-56℃.经拉曼光谱分析,含金矿床的气相成分除有CO2外,有由少量的H2S,可见CO2-H2O不混溶.

Based on the characteristics of the wall-rock alteration in the Gold ore-system in China, to explore the alteration characteristics of closely related to gold mineralization. Qualitative analysis shows that the composition of the fluid inclusion is carbonic fluid with low salinity in the Gold ore-system. The initial melting temperature is strictly limited to - 56 to - 62.5 for CO2. Raman analysis shows that the gas phase composition of GoId ore-system has CO2 and a little H2S,CO2-H2O is not miscible.