江西省万载县野猫冲铜矿控矿构造特征及找矿意义

江西省万载县野猫冲铜矿床为中低温热液（成矿流体）沿构造破碎带蚀变-蚀变岩型铜矿床。在地表地质调查、钻孔岩芯考察及岩矿鉴定的基础上，对野猫冲铜矿控矿构造进行详细研究，表明北东东向大型叠瓦状推（滑）覆构造控制矿区内各地质单元的延深与展布，北东向韧性剪切变形带控制矿区铜金矿体的展布，矿体呈似层状赋存于韧性剪切断裂之间的次级层间破碎带和小断裂带内，带内发育较强的动热变质，硅化、绢云母化和绿泥石化发育。矿石以黄铜矿为主，贫硫，成矿流体具有多期次的活动、叠加改造的特点。上栗-潭埠-宜丰断裂带自西至东已发现20余处铜多金属矿床（点），显示该带具有巨大找矿潜力。

Characteristics of ore-controlling structure and its implication of the Yemaochong copper deposit,Wanzai county,Jiangxi Province

The Yemaochong copper deposit in the Wanzai County ,Jiangxi Province ,is an alteration-type copper deposit which was formed by medium-low temperature hydrothermal solution （ore-forming fluid） alteration along tectonics fractures .On the basis of the surface geological survey ,observation of drilling cores and identification of rocks and minerals , the ore-controlling structure in the Yamaochong copper deposit was researched in detail .It is shown that the large-scale NEE-strike imbricated nappe （gli-ding nappe） structure controlled the deepening and distribution of all the geological units ,and the NE-strike ductile shear deformable zones dominated the distribution of Au-Cu ore bodies in the area .The Au-Cu ore bodies with stratoid shapes were hosted in secandary-interlayer fracture zones and minor fractures between ductile shear zones ,where more intensive dynamo-thermal metamorphism ,silicification ,sericiti-zation and chloritization were developed .The ores are mainly consisted of chalcopyrites and poor in sulfur .The ore-forming fluids are characterized by multiphase activities and superimposed reformation .More than 20 copper polymetallic ore deposits （occurrences） have been found in the Shangli-Tanbu-Yifeng fault zone from west to east ,showing great prospecting potentials of the zone .