摘要
沈家垭金矿床位于雪峰弧形隆起带转折部位,含金蚀变带赋存于板溪群马底驿组中上部粉砂质板岩中,受层间破碎带控制,官庄—黄土铺逆掩断层、陈家—香草湾逆掩断层呈NE4 5°～80°走向贯穿矿区中北部,控制了金矿(化)体的产出,已发现了3条矿脉,延伸长,厚度大,品位高,矿石矿物主要是自然金。次有少量辉锑矿、毒砂、黄铁矿等。脉石矿物主要是石英、绢云母、绿泥石等。围岩蚀变发育,类型多样,其中绢云母化、黄铁矿化、硅化是重要的找矿标志。
Shenjiaya gold deposit lies at the arcuate turning part form East-Northern to East-Western of Xuefeng radial swelling zone,and the alteration zones containing gold,which are almost in slate of middle and upper Banxi Gr.,Madiyi Fm.,are controlled by interformational broken belts.The Guanzhuang-Huangtupu overthrust and Chenjia-Xiangcaowan overthrust,passing through the northern and the center of the ore district along NE45°～80°direction,control the formation of gold mineral bodies.In this district,there are three long thick mineral veins with high-grade ores.The major ore mineral is mainly gold,and others are antimonite,arsenopyrite and pyrite.The major vein minerals are quartz,sericite and chlorite.The wall rock shows various alterations,of which sericitization,pyritization and silication are significant indicators.
出处
《黄金》
CAS
北大核心
2005年第4期16-18,共3页
Gold
基金
国土资源大调查项目<湖南沅陵县唐浒坪及外围金铜矿评价>部分成果
关键词
金矿
围岩蚀变
金矿化
含矿岩系
gold ore
wall rock alteration
gold mineralization
mineralized rock system
