桃园式铜矿矿床地质特征及其控矿因素分析  

The geological characteristics of Taoyuan-type copper deposit and the ore-controlling factors

作　　者：刘卫明[1,2] 刘继顺[1] 刘文恒[1] 欧阳玉飞[1,3] 刘文剑 尹利君[1] 

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]江西理工大学资源与环境工程学院,江西赣州341000 [3]广东省广晟矿产资源投资发展公司,广州510600 [4]云南金沙矿业股份有限公司,昆明654100

出　　处：《地质找矿论丛》2012年第3期278-283,共6页Contributions to Geology and Mineral Resources Research

基　　金：云南省院省校科技合作项目(编号:2003UDBEA00A026);云南金沙矿业股份有限公司联合资助

摘　　要：桃园式铜矿产于黑山组底部黑色碳质板岩和凝灰质板岩中。矿石的微量元素特征、黄铁矿的Co/Ni比值、黄铁矿和黄铜矿的硫同位素特征表明,成矿热液主要来自深部,少部分来自海水;稀土元素特征显示还原成矿环境;主要成矿阶段在晋宁晚期的基性岩浆活动时,或稍晚时期。主要控矿因素为地层及岩相古地理、构造、岩浆活动和矿化浓集中心。Taoyuan-type copper deposit is in black carbonaeous shale and tuffaceous slate at bottom of Heishan formation. Trace elements characteristics of ore, Co/Ni ratio of pyrite and sulfur isotope analysis of pyrite and chalcopyrite indicate that the ore-forming hydrothermal fluid mainly comes from depth, a few from sea water. Characteristics of rare earth elements show a redusced metallogenic environment. Its main metallogenic phase is in late Jinning period when basic magmatism took place or later. Strata, litho-facies and paleogeography, structure, magma activity and mineralization concentration center are the ore-controlling factors.

关 键 词：桃园式铜矿 黑山组 控矿因素 东川铜矿 云南省 

分 类 号：P613[天文地球—矿床学] P618.41[天文地球—地质学]