广西德保县都安三角山金矿的成矿条件及成因探讨

三角山金矿主要产于早泥盆系塘丁组的碎屑岩和泥质粉砂岩中,矿体严格受地层层位、断裂及褶皱等构造控制,矿石类型以泥质矿石为主,硅质矿石次之的氧化矿石。围岩成分主要为泥岩,泥质粉砂岩及硅质岩;围岩蚀变有硅化、褐铁矿化及粘土化。经过野外地质勘查,并结合前人资料对其成因进行分析,认为该区具有良好的金矿成矿地质条件,三角山金矿为微细浸染型金矿床,属于大气降水渗滤成因的中低温热液矿床。

Metallogenic Conditions and Genesis of the Shangjiaoshan Gold Deposit in Du'an,Debao County,Guangxi

The Sanjiaoshan gold deposit occurs mainly in the clasolite and pelitic siltstone in Tangding group in lower Devonian system which strictly controlled by strata,faults and folds.The types of ore are mainly argillaceous,and silica oxidized ores in less.The host rocks are pelite argillaceous siltite and sillcalite.The alterations of the host rock include silicification,limonitization and argillation.With field reconnaissance geological survey,this paper figures out good mineralization for gold mine in this ar...