摘要
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 deposit is the east extension of Luerba gold deposit, located in the west section of Zaishang-Mawu National Package Exploration Zone. The paper introduced the metallogenic geology, characteristics and ore-controlling factors of the deposit, deepened the knowledge of geological condition of gold metallogenesis.The ore bodies controlled by EW tectonic alteration belt exist in Triassic sandstone with slate. It has outlined 29 ore bodies which are 60 ~1 197 m long, average gold grade is 1.16 ×10-6~20.07 ×10-6. The ore types include alterated sandstone and slate, the main alteration are silification, arsenopyritization, ferritization and carbonatization.
出处
《甘肃地质》
2015年第4期41-45,共5页
Gansu Geology
关键词
簸箕沟金矿
深部富集特征
整装勘查区
Bojigou gold deposit
enrichment in the deep： package exploration
