豫西菊竹沟金矿床地质特征及找矿前景

摘要

朱阳关―夏馆断裂是一条长大于400km,深达上地幔的超壳断裂,沿断裂出露有较多的燕山期花岗岩(脉)体及一系列 Cu、Au、Ag、Pb、Zn 异常,有色金属、贵金属成矿作用明显。菊竹沟金矿床赋存在朱阳关—夏馆断裂次级断裂带中,为蚀变构造岩型金矿。本文分析了菊竹沟金矿床特征、找矿前景。提出了在朱阳关一夏馆断裂带中寻找金多金属矿床潜力较大。随着深部地质找矿的进一步开展,本区可成为我国重要的金多金属矿产基地。%Zhuyangguan-Xiaguan fracture is an ultra-crustal fracture,and its length is more than 400km and it reaches the upper mantle at depth.Along the fracture,Yanshanian granite rocks (veins)outcrop and a series of Cu,Au,Ag,Pb and Zn anomalies exist with obvious mineralization of nonferrous metals and precious metal.As an altered tectonite type gold deposit,Juzhugou gold deposit occurs in the subsidiary fracture zone of Zhuyangguan-Xiaguan fracture.This paper analyzed the characteristics and prospecting potential of Juzhugou gold deposit,and put forth that the prospecting potential of gold polymetallic deposits in Zhuyangguan-Xiaguan fracture was great.With the further development of prospecting works in its deep part,this area might become an important gold polymetallic mineral base of China.