内蒙古香林香达铜矿区地球化学找矿研究  

Research of geochemical exploration in Xianglinxiangda copper mining area,Inner Mongolia

作　　者：吴小雷[1] 陶明荣[1] 丁汝福[1,2] 詹妮[3] 王滋平[1] 吴继炜[1] 

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]有色金属矿产地质调查中心,北京100012 [3]桂林理工大学南宁分校,广西南宁530001

出　　处：《矿产与地质》2017年第2期348-354,共7页Mineral Resources and Geology

基　　金：国家科技支撑计划项目"新疆南部三地州优势矿产预测评价关键技术研究"(编号:2015BAB05B00);大冶有色金属责任有限公司找矿项目;广西第三批特聘专家"中国有色桂林矿产地质研究院有限公司隐伏矿找矿预测研究"专项资金共同资助

摘　　要：针对矿区地表及井下四个中段共采集地层和构造蚀变岩样品194件,分析Ti、V、Cr、Mn、Co、Ni、Au、Ag、Cu、Pb、Zn、W、Sn、Mo、Bi、As、Sb、Hg等18种微量元素含量,编制各元素地球化学0号勘探线横剖面图,综合利用地球化学图件分析法与格里戈良分带指数法,确定元素的轴向分带序列。通过地质地球化学资料可知,石英闪长岩、构造蚀变岩中Cu、Ag、As、Au、Mo、Sn元素含量高,变异系数大,表明这些元素参与成矿蚀变作用。矿区原生晕轴向分带序列为:(Zn、Cr1、Hg1、Ni、As)→(Pb、V、Mn、W、Cr_2、Ti)→(Hg_2、Sb、Co、Bi、Sn、Ag、Au、Mo、Cu),根据元素地球化学横剖面图中主成矿元素异常高值带向下延伸未封闭、矿体向下未尖灭、特征前缘晕元素Hg、成矿晕元素Cu出现矿尾晕等特征,说明矿体向下仍有一定的延伸,预示着深部具有一定的找矿潜力。The contents of 18 trace elements（Ti,V,Cr,Mn,Co,Ni,Au,Ag,Cu,Pb,Zn,W,Sn,Mo,Bi,As,Sb and Hg）are analyzed for 194 samples of strata and structural alteration rocks,collected from the surface and four middle sections in the Xianglinxinagda copper deposit.The geochemical profiles of all 18 trace elements are compiled.The axial zoning sequence of elements is established on the basis of the analysis method of geochemical profiles and Grigoryan zonal index method.The geological and geochemical data show that the concentrations of metallogenic elements,i.e.Cu、Ag、As、Au、Mo and Sn,are high in the quartz diorite and structural alteration rocks with large variation coefficient.It indicates that those elements are involved in the mineralization and alteration process.The longitudinal zoning sequence of primary halo in the mining area is（Zn,Cr_1,Hg_1,Ni,As）→（Pb,V,Mn,W,Cr_2,Ti）→（Hg_2,Sb,Co,Bi,Sn,Ag,Au,Mo,Cu）.In the horizontal element profile of geochemistry,the high value zones of main ore-forming elements are not closed along the downward ex-tension.The orebody is not extinguished towards the deep place and the typical front halo element of Hg and metallogenic halo element of Cu have the rear halo features.These show that the orebodies have some ex-tension downward the deep place.It indicates that there is still a good prospecting potential in the deep place of the mining area.

关 键 词：铜矿 地球化学 微量元素 格里戈良分带指数法 找矿潜力 香林香达 内蒙古 

分 类 号：P618.41[天文地球—矿床学] P632[天文地球—地质学]