云南东川因民铜矿床地质特征及成因探讨

Geological Characteristics and Genesis of the Yinmin Copper Diposit in Dongchuan,Yuannan Province

云南东川因民铜矿床位于扬子板块西源,为东川铜矿田中重要的铜矿床之一,主要矿床类型分为东川式铜矿和稀矿山式铁铜矿。东川铜矿区构造演化历史经历了基底构造、裂谷构造和后期构造三个时期,结合矿床的宏观产出特征及矿石的组构特征,判断东川式铜矿为沉积改造型矿床,稀矿山式铁铜矿为火山喷流沉积-热液(多次)叠加型矿床。

The Dongchu Yinmin copper deposit in Yunnan Province is located in the western part of the Yangzi plate important copper deposits in the Dongchuan copper ore f ie ld . The main deposit types are divided into Dongchuan copper mine and lean mine ironcopper mine. The tectonic evolution history of Dongchuan copper mine area has undergone three periods of basement structure,rift valley structure and posttectonic period. Combined with the macroscopic output characteristics of the ore deposit and the structural characteristics of the o re,the Dongchu - an copper deposit is determined to beasedimentary basement deposit. Mine iron copper deposit for the volcano je t deposition - hydrothermal （ multiple） superimposed deposits.