构造叠加晕找矿方法在青海五龙沟金矿床深部找矿勘查中的应用

The Application of Tectonic Superposition Halo Prospecting Method in the Deep Prospecting of the Wulonggou Gold Deposit,Qinghai

青海五龙沟金矿床位于东昆仑中段北缘之昆北断裂带和昆中断裂带夹持部位之间,区内岩浆岩发育,韧脆性断裂带弥补,形成了格尔木—五龙沟变质核杂岩构造,控制着区内金矿床的分布规律。以岩金沟矿段为研究对象,分析了该矿床的构造叠加晕特征。研究表明:矿床属于破碎带蚀变岩型金矿床,受北西—南东向韧性破碎带控制,含金蚀变带具有平行等距分布特征;认为F-Cl-B构成了该矿床的前缘晕,As-Sb-Ag组成了中前缘晕,Cu-Pb-Zn组合为中后部晕,W-Mo-Sn-Bi组合为尾部晕,对深部盲矿体预测提供参考,并提出了具有进一步找矿勘查的有利找矿靶区;根据现阶段钻孔施工显示,按选用的深部找矿预测方法,在3090中段预测区域已发现金矿体两条。

The Qinghai Wulonggou gold deposit is located between the Kunbei fault zone on the northern edge of East Kunlun and the holding site of the Kunzhong fault zone,the magma rock development in the region and the brittle ness of the fracture zone.It is forming the Germu-Wulonggouin nuclear metamorphic rock structure.The distribution law of gold deposits in the region is controlled.In this paper,the rock and Jingou section is taken as the research object,includingthe analysis of the structure of the deposit superimposed halo characteristics.The study shows that the deposit belongs to the broken belt erosion rock type gold deposit,and it is controlled by the north-west-south-east toughness-toughness-fracture zone.The gold-bearing erosion belt has parallel equidistant distribution characteristics.F-Cl-B constitutes the leading edge halo of the deposit,As-Sb-Ag forms the middle-front halo,Cu-Pb-Zn combination for the middle-rear halo,W-Mo-Sn-Bi combination for the tail halo to provide reference for the deep blind ore body prediction.It puts forward a favorable prospecting area with further prospecting exploration.Two gold deposits have been found in the 3090 mid-section forecast area,indicating that the deep prospecting prediction method selected in this paper is effective.