福建永泰岭头坪矿区金铅锌矿地质特征及找矿远景

On geological properties and ore exploration prospect of Au-Pb-Zn deposit in Lingtouping mine of Yongtai County in Fujian

福建省永泰县岭头坪矿区金铅锌矿位于华南褶皱系东部,寿宁—华安火山基底隆起带中段东侧,屏南—华安NE向断裂带与建宁—湄洲湾NW向断裂带的交汇部位。通过区域地质、矿床地质、土壤地球化学特征等分析,认为构造是控制区内矿体诸多因素中最主要因素;晚侏罗世中酸性火山碎屑岩是岩浆热源;基底卓地组、葛坑组变质岩是金的来源,侏罗系南园组第二、第三段为区域铅、锌、铜、钼提供了矿质来源。研究区就矿找矿潜力大,下寨一带深部有金或铅锌矿体,下寨—湖头一带可能有铅锌矿。

Au-Pb-Zn deposit in Lingtouping mine of Yongtai County in Fujian was located in the east of South China fold system, east side of middle section of Shouning-Huaan volcanic basement uplift belt, intersections of Pingnan-Huaan northeast strike fracture belt and Jianning-Meizhouwan northwest strike fracture belt. Through analyses of regional geology, mineral geology and soil geochemical properties, the authors thought that structure was the main factor controlling the other factors in the ore body ; intermediate-acid volcano clastic rock in late Jurassic Epoch was magma heat source; the metamorphic rocks in Zhuodi Formation and Gekeng Formation in the basement was the origin of Au, the second and third blocks in Jurassic Nanyuan Formation provided regional material sources for Pb, Zn, Cu, Mo. The ore exploration in the study area was promising, there were Au or Pb-Zn ore bodies along Xiazhai and Pb-Zn along Xiazhai to Hutou.