云南省宁蒗大公山铜矿床地质特征及成因浅析

The Geological Charateristics and Genesis Analyses of Dagongshan Copper Deposit in Ninglang,Yunnan Province

云南省宁蒗大公山铜矿床位于扬子古陆块丽江-盐源陆缘褶-断带宁蒗陆缘坳陷中。本文通过对大公山铜矿床地层、构造、岩浆岩的研究,查清矿床控矿因素,结合矿体、矿石特征,分析矿床成因。通过研究发现,玄武岩组玄武岩是区内主要矿源层,大公山铜矿床主要受破碎带及裂隙控制,属后期热液型矿床。

Dagongshan copper deposit is located in Ninglang epicontinental depression of Lijiang-Yanyuan fault fold belt, Yangzi ancient land. This article studies the formation, structure, magmatic rocks, finds out the ore-controlling factors of Dagongshan copper deposit. Combined with the feature of ore body, ore deposit genesis is analyzed. Research found that basalt of basalt group is the main source bed, Dagongshan copper deposit is mainly controlled by fracture zone and fissure, it belongs to the late hydrothermal type deposit.