祁门蒋村铜多金属矿地质特征及控矿因素

GEOLOGICAL FEATURES AND ORE-CONTROL FACTORS OF COPPER POLYMETALLIC ORE DEPOSIT IN JIANGCUN, QIMEN

有色金属铜、铅、锌及贵金属金、银作为国民经济中重要的金属材料,其用途十分广泛,有广阔的市场。祁门县蒋村铜多金属矿是皖南近年来皖南找矿的成果之一。蒋村矿区的形成与燕山期岩浆活动、兰田组灰岩及断裂构造等关系密切,是在区内近东西向断裂破碎带形成后,花岗闪长岩岩浆沿此断裂带侵入形成矽卡岩,含矿热液沿断裂通道上升,通过渗透交代和充填作用形成脉状矿体和角砾型矿体。本文主要是通过对蒋村铜多金属矿矿床地质特征及控矿因素和矿化富集规律的分析,总结区域上寻找该类型矿的找矿标志,为皖南地区进一步的找矿提供实践经验和理论依据。

Playing an important role in national economy, nonferrous metals of copper, lead and zinc and precious metals of gold and silver have wide applications and broad market. The copper polymetallic ore deposit in Jiangcun, Qimen County is one of ore-prospecting results in south Anhui in recent years. The formation of Jiangcun ore district is closely related to the Yanshanian magmatic activity, Lantian Formation of limestone and rift structure. After the nearly EW-trending fracture zone formed in the area, granodiorite magma intruded into the zone forming skarn, and ore-bearing hydrothermal solution migrated upward along the fracture passage, as a result, ore veins and brecciaed ore bodies took form. This paper analyzed geological features, ore-control factors and ore enrichment pattern of the deposit, summarized regional ore-prospecting indicators for the type of deposit, provided experiences and theoretical basis for furthering mineral exploration in south Anhui.