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簸箕沟金矿处于鹿儿坝金矿东延段,位于甘肃寨上—马坞金矿国家级整装勘查区西段。金矿赋存于中三叠统砂岩夹板岩中,受近EW向构造蚀变带控制,矿区内土壤化探异常发育,圈定金矿体29条,矿体长度在60~1 197m之间,金平均品位在1.16~20.07×10~(-6)之间,主要矿石类型为蚀变砂岩型、板岩型,主要围岩蚀变有硅化、毒砂黄铁矿化、褐铁矿化、碳酸盐化。通过近年深部探矿工作,主要矿体延深稳定,矿床规模已接近大型。本文通过对成矿地质背景、地质特征、控矿因素分析,深化了对成矿地质条件的认识,对指导区域找矿具有重要意义。
Bojigou gold mine is located in the east extension of Lille dam gold, located in Zhaizhang - Gansu on the west side of the state-level integrated exploration area. The gold deposits occur in the Middle Triassic sandstone plywood and are controlled by tectonic alteration in the near EW direction. The geochemical prospecting in the mining area is abnormal. There are 29 gold ore bodies delineated and the ore body length is between 60-1 197 m. The average grade of gold is between 1.16 and 20.07 × 10 -6. The main types of ore are altered sandstone type and slate type. The main wall rock alteration is silicification, arsenopyrite pyritization, limonite mineralization, Carbonated. Through the deep prospecting work in recent years, the main orebody has been deepened and stabilized, and the size of the deposit has been approaching a large size. Based on the analysis of metallogenic geological background, geological characteristics and ore-controlling factors, this paper deepens the understanding of the geological conditions of ore-forming and is of great significance to the prospecting of the area.