广东省黄岩溪一带铜成矿地质特征及找矿远景分析

Geological features and prospecting potential of copper mineralization in Huangyanxi area,Guangdong Province

研究区位于我国重要的南岭成矿带中段,受区域构造岩浆活动影响,铁、铜、钨、铅、锌等多金属矿成矿条件优越。通过区内1∶1万土壤地球化学测量,圈定单元素异常35个、综合异常5个,在异常区内发现铜、铁矿体5条,主要赋存于花岗岩体与石炭系下统石磴子组灰岩、大理岩化灰岩接触带上,围岩可见有矽卡岩化、硅化等蚀变,属典型的矽卡岩型铜矿床、接触交代—热液铁矿床。根据研究区内矿床类型,赋矿条件等特征,认为矿区深部及外围具有一定找矿潜力,并圈定2处找矿靶区,为该区域金属矿床找矿提供了依据。

The research area is located in the middle of the important Nanling metallogenic belt in China.Under the influence of regional tectonic magmatic activities,the metallogenic conditions of iron,copper,tungsten,lead,zinc and other polymetallic ores are superior.According to the 1∶10000 soil geochemical survey in the area,35 circular element anomalies,5 comprehensive anomalies,and 5 copper and iron ore bodies were found in the abnormal area,which mainly occurred in the contact zone between granite mass,Lower Carboniferous Shidengzi Formation limestone,and marbling limestone.The surrounding rock showed skarn,silication and other alterations,which is a typical skarn type copper deposit,contact-metasomatic hydrothermal iron deposit.According to the type of deposit and the conditions of ore deposit in the study area,it was considered that the deep and outer parts of the mining area had certain prospecting potential,and two prospecting target areas were delineated,which provided a basis for the metal deposit prospecting in this area.