云南哀牢山金矿带北西段地质特征与找矿靶区  

GEOLOGICAL CHARACTERISTICS AND PROSPECTING TARGETS OF THE NORTHWEST SECTION OF THE AILAOSHAN GOLD BELT,YUNNAN

作　　者：文加春 孙技星 WEN Jia-chun;SUN Ji-xing(Yunnan Geological Sciences Institute,Kunming 650051)

机构地区：[1]云南省地质科学研究所,云南昆明650051

出　　处：《云南地质》2024年第3期365-369,共5页Yunnan Geology

摘　　要：云南哀牢山金矿带北西段牛街地区三条金矿化蚀变带矿体呈层状赋存于下古生界绢云石英微晶片岩构造破碎带中,总体呈北西-南东向展布,倾向北东,厚度0.69m~4.11m,Au品位1.10ω×10^(-6)~4.20ω×10^(-6),矿床成因为浅变质碎屑岩型。构造破碎带、富矿层位、侵入岩体及硅化-褐铁矿化(黄铁矿化)带同时有物、化探异常叠合部位是寻找金矿有利地段,圈定了三个找矿靶区。Ore bodies of the three gold mineralization alteration zones in the Niujie area,northwesternAilaoshan gold belt,Yunnan,are layered in thestrutuaral fracture zone of the Lower Paleozoic sericite quartz microcrystalline schist.They are generally distributed in the NW-SE direction,inclined toNE,with a thickness of 0.69-4.11m and an Au grade of 1.10ω×10^(-6)~4.20ω×10^(-6).The deposit is of low metamorphic clastic rock type.The structural fracture zones,the ore-rich layers,the intrusive rock masses and the silicification-limonite(pyrite)mineralization zones with both physical and geochemical anomalies are the favorable areas for exploring gold deposits.Three prospecting target areas have been delineated.

关 键 词：地层+构造控矿 侵入岩体 找矿靶区 哀牢山金矿带 云南弥渡 

分 类 号：P618.51[天文地球—矿床学]