临沧锗矿床的稀土元素地球化学研究  

REE GEOCHEMISTRY OF LINCANG SUPER LARGE GERMANIUM DEPOSIT

作　　者：戚华文[1] 胡瑞忠[1] 苏文超[1] 毕献武[1] 漆亮[1] 叶造军[1] 

机构地区：[1]中国科学院地球化学研究所,贵州贵阳550002

出　　处：《矿物学报》2001年第4期689-694,共6页Acta Mineralogica Sinica

基　　金：国家自然科学基金项目 (批准号 :496 73191;496 33110 )

摘　　要：通过对临沧锗矿床中基底花岗岩、矿化煤以及硅质岩的稀土元素地球化学研究认为盆地基底花岗岩提供了形成锗矿化的锗和形成硅质岩的硅 ;本区陆相热水成因硅质岩的Ce异常不明显 ,相对富集LREE ;矿化煤相对富集HREE ,这可能主要与矿化煤在与含锗热液的相互作用过程中 ,煤对重稀土的优先富集有关。REE geochemistry studies of granites, Ge rich coal and silicates from the Lincang germanium deposit, Yunnan Province indicate that both Ge and silica primarily came from granites in the basement of the sedimentary basin, and REE composition and variation characteristics of silicalites which were formed under continental hydrothermal environment are different from those of typical marine hydrothermal sediments, HREE contents of Ge rich coal are relatively increased. The main reason is that the HREE are preferentially concentrated in coal.

关 键 词：锗矿床 稀土元素 地球化学 硅质岩 富锗煤 富锗热液 硅质岩 

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