安徽宁墩地区金钨地球化学异常找矿远景

宁墩地区金、钨地球化学异常以Au、As、W、Bi元素组合为主,异常套合较好、分带明显,异常强度高、规模大,受北东向断裂控制。通过水系沉积物加密采样和土壤、岩石剖面测量及路线地质调查,该区存在次生晕异常和原生晕异常,查证方法技术有效。位于褶皱和断裂构造发育部位的异常,有Au、W等高背景花岗闪长斑岩脉的侵入,物质来源和热源充足,成矿地质条件优越。路线地质调查发现金矿化体四处,但与该区异常强度和规模不相称,尤其是在破碎带矿化蚀变岩石中,Au、W、Mo成矿元素与As、Sb、Bi伴生元素含量均较高,该区显示出较好的Au、W、Mo找矿前景。

ORE-SEARCH PROSPECTS OF GOLD AND TUNGSTEN GEOCHEMICAL ANOMALIES IN NINGDUN AREA,ANHUI PROVINCE

Geochemical anomalies of gold and tungsten in Ningdun area are dominated by the element association of Au-As-W-Bi.These anomalies are well coincident with the structural rifting belt.They are characterized by high intensity,extensiveness,and remarkable zoning,and are evidently controlled by NE-trending faults.Both secondary and primary anomalies exist in the area,as revealed by high-intensity sampling in stream sediments,soil and rock profile survey and geological investigation across the profile.The inspec...