临沧锗矿床的微量元素地球化学  

Trace element geochemistry of Lincang germanium deposit

作　　者：戚华文[1] 胡瑞忠[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学开放研究实验室,贵州贵阳550002

出　　处：《煤田地质与勘探》2002年第2期1-3,共3页Coal Geology & Exploration

基　　金：国家自然科学基金重点项目 (496 33110 )资助

摘　　要：采用ICP -MS测定了临沧锗矿中 5 1个含矿煤、5个无矿煤、9个硅质岩样品的微量元素含量 ,并与基底二云母花岗岩进行对比 ,探讨了含矿煤与无矿煤的微量元素地球化学及其与锗超常富集的关系 ,得出几点认识 :a 含矿煤、无矿煤和硅质岩中的大多数微量元素来自基底的二云母花岗岩 ;b 热水携带了成矿所必需的锗 ;cTrace element geochemistry studies of lignites and silicates in Lincang germanium deposit,Yunnan Province indicate most trace element mainly came from the muscovite granites in the basement of the sedimentary basin,germanium was mainly carried by hydrothermal water,a positive correlation was found between Ge and Nb in the Ge rich lignites,Nb can be regarded as the indicate element of germanium mineralization.All results came from 51 mineral rich coal samples,5 mineral free coal samples and 9 silicate samples with ICP MS method.

关 键 词：地球化学 微量元素 褐煤 热水 锗矿床 临沧市 

分 类 号：P618.75[天文地球—矿床学] P595[天文地球—地质学]