摘要
青龙沟金矿位于华北地台北缘燕辽沉降带山海关隆起与辽西拗陷的过渡带上,赋存于中元古代碳酸盐岩地层中,是辽西地区同类型金矿的代表之一.在野外调查和室内测试分析的基础上,对金矿的矿源层、成矿温度、蚀变特征、赋存条件等进行了深入的研究分析,认为该矿床属中-低温的热液矿床,成矿热液为岩浆水、地下水的混合物,Au主要来源于雾迷山组的碳酸盐岩.受多期次的构造活动影响,Au经历了多次萃取、富集,矿体的产状严格受层间角砾岩带和构造破碎带控制,具有地层与构造双重控制的特征.
The Qinglonggou gold deposit, located in the transitional belt between Shanhaiguan uplift and Western Liaoning depression in the Yanliao subsidence zone on the northern margin of North China platform, occurring in Mesoproterozoic carbonate rocks, is a representative of the same type in Western Liaoning Province. On the basis of field investigation and laboratory analysis for the source bed, mineralization temperature, alteration features and storage conditions of gold deposit, it is concluded that the deposit belongs to epi-mesothermal type. The ore-forming fluid is the mixture of magmatie water and groundwater. The gold is derived from mainly the carbonate rock of Wumishan Formation. Affected by multiple stages of tectonic activities, the gold experienced a number of extraction and enrichment. The occurrences of orebodies are strictly controlled by the interlayer breccia zones and tectonic fracture zones, showing the characteristics of dual controls by stratigraphy and structure.
出处
《地质与资源》
CAS
2016年第5期443-448,共6页
Geology and Resources
关键词
金矿
碳酸盐岩
硅化蚀变带
辽西地区
gold deposit
carbonate rock
silicification alteration belt
Western Liaoning Province
