广东信宜长坑铜多金属矿床地质特征及成因浅析

Geological characteristics and Genesis of Changkeng copper polymetallic deposit in Xinyi,Guangdong Province

广东信宜长坑铜多金属矿床位于桂东—粤西成矿带,区内构造样式组合复杂,岩浆活动频繁,为区内丰富的矿产资源形成提供了丰富的热能。本文从地层、构造和岩浆岩3个方面总结了矿区地质特征,分析了矿体特征并总结了矿床成因。通过研究表明,长坑铜多金属矿床属中低温热液充填交代矿床,与震系云开组云母石英片岩致密的片理带和节理带密切相关。

Located in the western Guangdong metallogenic belt of Guidong County,the Changkeng Copper polymetallic deposit in Xinyi,Guangdong Province,is characterized by complex tectonic patterns and frequent magmatic activities,which provide abundant heat energy for the formation of rich mineral resources.This paper summarizes the geological characteristics of the deposit from the aspects of strata,structure and magmatic rock,analyzes the characteristics of the orebody and summarizes the genesis of the deposit.The study shows that the Changkeng copper-polymetallic deposit belongs to the mesothermalepithermal filling metasomatic deposit,which is closely related to the intensive foliation and joint zones in the mica-quartz schist of the Sinian Yunkai Group.