西藏嘎拉勒铜金矿床矿石矿物赋存状态及成因意义  

Occurrence and Genetic Implication of Ore Minerals from Galale Copper Gold Deposit, Tibet, China

作　　者：赵亚男[1] 肖渊甫[1] 张世铭[2] 何建娟[1] 李志军[1] 龚婷婷[1] 郭龙[1] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《矿物学报》2014年第1期83-91,共9页Acta Mineralogica Sinica

基　　金：国家公益性行业科研专项(编号:201011013-3);矿物学岩石学矿床学国家重点(培育)学科建设项目(编号:SZD0407)

摘　　要：嘎拉勒矽卡岩型铜金矿是继多不杂、尕尔穷等大中型铜多金属矿床后,在班公湖-怒江成矿带西段发现的又一中型矿床。作者通过镜下对光片、薄片进行鉴定的基础上结合扫描电镜和X射线能谱成分分析,对矿石矿物特征及赋存状态做了系统的鉴定和研究。矿石中除常见金属氧化物、金属硫化物外,还发现了自然金、自然银、辉银矿等贵金属矿物;辉铋矿、自然铋、辉锑矿等重要铋、锑的工业矿物;自然铁、自然铜及金属互化物,发现罕见的含放射性元素(Tc、Pa、U、Th)的自然银。并通过对Ag与Pb、Pa、U相关性分析显示出共生关系密切。研究表明嘎拉勒矿床是成矿物质成分复杂的矽卡岩型铜金矿床,矿石综合利用潜力巨大。Galale skam type copper gold deposit was another medium-sized deposit in the Western Bangong-Nujiang metallogenic belt which is found after Duobuza porphyry copper deposit and Gaerqiong copper gold deposit. Combined with microscope identification with scanning electron microscope x-ray energy spectrum analysis, characteristic and occurrence state of the ore minerals was studied. Ore minerals mainly were metal oxides and metal sulfides. Native gold, native silver and other precious metal minerals like argentite were found. Industrial minerals of bismuth and antimony like bismuthinite, native bismuth, and stibnite were also found. Native iron, native copper, other intermetallics and an unusual native sliver bearing radioactive elements （Pa, U, and Th） were discovered. Base on correlation analysis, Ag had significant correlations with Pb, Pa and U. Research shows that the metallogenic materials have complicated components. The ore minerals of Galale have great potential of comprehensive utilization.

关 键 词：铜金矿床 赋存状态 矿石矿物 成因 嘎拉勒 西藏 

分 类 号：P575[天文地球—矿物学] P611[天文地球—地质学]