岩石矿物学杂志2018，Vol.37Issue(2)：259-269,11.
黔西北香炉山铜矿床赋矿主岩矿物岩石学研究
A study of the mineralogy and petrology of the copper-hosting rocks in the Xianglushan copper deposit, Weining, northwest Guizhou
摘要
Abstract
The Xianglushan copper deposit in Weining of northwest Guizhou is located in the copper bed between the top of the third unit of Emeishan basalt Formation and the bottom of Xuanwei Formation,and belongs to basalt type copper deposit.In order to study the geological characteristics of copper-hosting strata and mineralogical and petrological characteristics of copper-hosting rocks,the authors carried out rock-mineral determination,scanning electron microscope and electron microprobe analysis systematically in combination with field geological survey.The results show that the ore minerals of lithic siltstone are mainly composed of chalcocite,etrahedrite,bornite and malachite,and gangue minerals are mainly feldspar,quartz,chlorite and carbonaceous materials;the ore minerals of volcanic breccia are mainly composed of pyrite,bornite,chalcopyrite,chalcocite,tetrahedrite and malachite,and gangue minerals are mainly quartz,chlorite,dolomite and clay minerals.According to main mineral content,primary ores can be divided into three natural types,i.e.,natural copper + chalcocite + hematite ore,natural copper + chalcopyrite + tetrahedrite ore and chalcopyrite + bornite + hematite ore.On the basis of mineral assemblages and intercalation relationship,mineralization can be divided into hydrothermal stage and supergene stage.The sequence of ore minerals at the hydrothermal stage is bornite→chalcopyrite-tetrahedrite-natural copper→chalcocite.At the supergene stage,malachite,hematite,hematite,ilmenite and limonite have been formed.关键词
矿物岩石学/玄武岩型铜矿/热液期/香炉山铜矿/黔西北Key words
mineralogy and petrology/basalt type copper deposit/hydrothermal stage/Xianglushan copper deposit/northwest Guizhou分类
天文与地球科学引用本文复制引用
李松涛,陈庆刚,夏勇,何明友,刘建中,周光红,赵平,张海..黔西北香炉山铜矿床赋矿主岩矿物岩石学研究[J].岩石矿物学杂志,2018,37(2):259-269,11.基金项目
贵州省地质矿产勘查开发局地质科研项目[黔地矿科合(2017)10号,黔地矿科合(2016)13号,黔地矿科合(2014)05号] Geological Research Project of Bureau of Geology and Mineral Exploration and Development of Guizhou Province (GZDKYH2017-10,GZDKYH2016-13,GZDKYH2014-05) （2017）
