滇西银子山金多金属矿床钻孔岩石原生晕分带特征与隐伏矿预测

银子山金多金属矿床位于特提斯成矿域之三江(造山带)成矿省的兰坪-普洱(陆块)Cu-Pb-Zn-Ag-Fe-Hg-Sb-As-Au-石膏-菱铁矿-盐类成矿带西南段的云县-景洪(火山弧)Cu多金属矿带,是近年来发现的与志留-泥盆纪构造、火山活动有关的隐伏热液型金矿床。从O号勘探线钻孔原生晕研究表明:钻孔原生晕轴向分带性从矿上-矿体-矿下分为(Hg、As、Sb)-(Zn、Cd、Pb、Ag、Cu、Au、Bi)-(Sn、Mo);从钻孔原生晕异常特征分析,部分钻孔并未完全控制蚀变带,矿区西侧深部仍具有较大找矿空间。

Characteristics of primary halo zoning and prediction of concealed ore bodies of Yinzishan gold polymetallic deposit in Yunnan West

The gold polymetallic deposit of Yinzishan is located in the Cu poly metallic ore belt of Yunxian-Jinghong in the southwest section of the Lanping-Puer block,which belongs to the metallogenic province of Sanjiang of the Tethys metallogenic domain.This is a concealed hydrothermal gold deposit discovered in recent years,which is related to volcanic activity of the structure in Silurian-Devonian.The study on the primary halo of the No.0 exploration line shows that the axial zonation of the primary halo of the borehole can be divided into(Hg,As,Sb)-(Zn,Cd,Pb,Ag,Cu,Au,Bi)-(Sn,Mo).According to the analysis of the abnormal characteristics of the primary halo in the borehole,some of the boreholes do not completely control the alteration zone,and there is still a large exploration space in the deep part of the west side of the mining area.