董家埝银铅矿床地质特征  

Geological characteristics of Dongjianian silver-lead deposit

作　　者：张鑫 ZHANG Xin(School of resources and environment,Henan University of technology,Jiaozuo 454000,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454000

出　　处：《世界有色金属》2020年第11期106-107,共2页World Nonferrous Metals

摘　　要：董家埝银铅矿床位于华北陆块南缘与秦岭褶皱带东段结合部位,秦岭造山带北缘东段,是近年来小秦岭南带发现的首个大型贵金属矿床。矿体主要赋存于中元古代小河花岗岩体的东部边缘F1断裂蚀变带内的碎裂蚀变岩矿化体内,产状与断裂带基本一致,总体以分枝复合脉状产出,主要发育碎裂状结构,块状、浸染状、细脉状等构造,主要的矿石矿物有方铅矿、黝铜矿、闪锌矿、黄铜矿、硫锑铜银矿和辉银矿。矿体围岩蚀变强烈,主要蚀变为硅化和绢云母化。构造为主要的控矿因素。The Dongjianian silver-lead deposit is located at the junction of the southern margin of the North China continental block and the eastern section of the Qinling fold belt.The eastern section of the northern margin of the Qinling orogenic belt is the first large-scale precious metal deposit discovered in the southern Qinling Mountains in recent years.The ore body mainly occurs in the fractured altered rock mineralization body in the F1 fault alteration zone on the eastern edge of the Xiaohe granite body in the Mesoproterozoic.The occurrence is basically the same as that of the fault zone.It develops a fragmented structure,massive,disseminated,fine veined and other structures.The main ore minerals are galena,chalcopyrite,sp halerite,chalcopyrite,sulphur-antimony copper-silver ore and sphalerite.The surrounding rocks of the ore body are strongly altered,and the main alterations are silicification and sericite.The structure is the main ore-controlling factor.

关 键 词：董家埝 银铅矿 控矿因素 

分 类 号：P618.52[天文地球—矿床学]