一种非传统铜矿资源——黔西北地区峨眉山玄武岩铜矿地质特征及成因探讨  

Geological Characters and Mineralization of Nontraditional Copper Mineral Resources,Emeishan Basalt in Northwest Guizhou

作　　者：廖震文[1] 胡光道[2] 

机构地区：[1]中国地质大学研究生院 [2]中国地质大学资源学院,武汉430074

出　　处：《地质科技情报》2006年第5期47-51,56,共6页Geological Science and Technology Information

基　　金：中国地质调查局国土资源大调查项目"黔西北地区铜铅锌矿评价"

摘　　要：总结了在黔西北地区铜矿资源调查中首次发现的峨眉山玄武岩铜矿的地质特征,并对其矿床成因、找矿标志、找矿方向、找矿远景、工作方法进行了探讨。研究表明该区存在沉积型和热液型两种矿化成因类型,并分布在玄武岩的4个不同层位中,成矿物质来源于玄武岩,在玄武岩喷溢的同时,形成火山热液矿化类型,在后期构造作用下,可进一步形成构造热液矿化类型;在火山喷溢间歇期及火山活动期后,由于地表风化剥蚀、水体搬运,在陆地湖盆中形成沉积型铜矿。研究认为沉积型铜矿是该区未来主要的找矿对象。由于铜矿所在区域亦是铂钯金等元素异常区,且沉积型铜矿常常与铁铝质层相伴产出,因此应加强对古陆地沉积相、古地理环境的研究,并注意综合评价。A type of nontraditional copper mineral related with Emeishan basalt has been discovered for the first time in Welling area of northwest Guizhou Province, it was not recognized enough in the past and can be divided into the sediment type and the volcano type. In order to provide the working basis for the future, this article states the geological character of new type copper deposit, discusses its geological character, origin, control condition and exploration symbols, sums up its rule, puts forward the working methods. The study indicates this copper mineral is distributed in four basalt layers, with its mineralization matter from the basalt. While the volcano type was formed at the same time with the basalt spray, the sediment type came into the land basin after the basalt. It is suggested that the sediment type should be the main working goal in the future.

关 键 词：非传统铜矿资源 峨眉山玄武岩 黔西北 

分 类 号：P618.41[天文地球—矿床学]