江西省弋阳县杨家坞铜矿地质特征与成因分析

Geological characteristics and genetic analysis of yangjiawu copper mine in Yiyang County, Jiangxi Province

弋阳县杨家坞铜矿赋存于中元古界双桥山群变质岩中,构造破碎带的形成为成矿热液提供良好的通道,为该区成矿带来大量的含矿热液(气),燕山期的二长花岗岩、花岗斑岩的侵入,顺着断裂破碎带的上侵,在有利的地段(地球物理、地球化学)形成铜多金属矿化(体)。

The yangjiawu copper deposit in Yiyang County occurs in the metamorphic rocks of the Mesoproterozoic Shuangqiaoshan group. The formation of the structural fracture zone provides a good channel for the ore-forming hydrothermal solution and brings a large amount of ore-bearing hydrothermal solution(gas) for the mineralization in this area. The intrusion of adamellite and granite porphyry in the Yanshanian period, along with the upinvasion of the fracture zone, forms copper polymetallic mineralization(body) in favorable sections(geophysics and geochemistry).