吉林省西林河金矿物质来源与成矿作用

The source of Au - bearing mineral and mineralization in the Xilinhe, Jilin province

本文通过对西林河金矿各地质体金平均含量的对比,以及稀土元素地球化学特征和同位素组成特征的研究,阐述了该金矿物质来源于古老变质岩系是以区域变质作用、混合岩化作用产生的流体为媒介,形成地壳深部含金较高的成矿流体,最终以韧性剪切带为导矿容矿空间的成矿作用过程。

Through the correlation of Au mean content in different geologic bodies of Xilinhe Aumining area, and research for REE geochemical characteristic and isotope composition characteristic , it is set forth that the source of Au - bearing mineral belongs to paleometamorphic rock series. As the regional metamorphic process and migmatization, higher Au - bearing mineralizing fluid was formed in the deep - crust, and the structure (ductile shear zone) is as passage - way for ore fluid.