吉林永吉锅盔顶子铜矿地质特征及成因浅析

Analysis on geological features and genesis of Guokuidingzi copper mine in Yongji,Jilin Province

勘查区地处吉中地区南楼山火山洼地南缘,系吉林省著名的大黑山-南楼山多金属成矿带内,本文介绍了该区的地层、构造、侵入岩及区内地质矿产特征。通过本区成矿地质背景和成矿特点将普查区由西北向东南划分成若干个成矿区域,本文浅析其中锅盔顶子铜矿区的矿床成因,矿化与燕山早期花岗闪长岩有关,矿体产于花岗闪长岩内接触带,并查明锅盔顶子铜矿床为岩浆期后中温热液石英脉型铜矿。

The survey area is located in the south of the volcanic depression of Nanlou Mountain in Jizhong area,belonging to the famous Dahei Mountain-Nanlou Mountain polymetallic metallogenic belt in Jilin Province. This paper introduces the formation,tectonics,intrusive rocks and the characteristics of geology and mineral resources in the area. Through the metallogenic geological background and metallogenic characteristics of this area,the census area is divided into several metallogenic areas from northwest to southeast. This paper analyzes the genesis of the copper deposits in Guokuidingzi Area,the mineralization is related to Yanshan early granodiorite,the ore body is found in the contact zone of the granodiorite,and to find out the copper deposit in Guokuidingzi Area is the post magmatic mesothermal quartzvein type copper deposit.