湘黔地区地层含金性研究  

A STUDY ON THE GOLD-BEARING POTENTIAL OF THE STRATA IN HUNAN AND EAST GUIZHOU

作　　者：余大龙[1] 周德忠[1] 张瑞蓉 叶大元 饶筑平 陈庆年[1] 

机构地区：[1]贵州工业大学资源工程系,贵阳550003

出　　处：《矿物学报》1999年第3期362-369,共8页Acta Mineralogica Sinica

基　　金：国家自然科学基金!094683

摘　　要：通过分析该地区以元古宇为主的各时代地层约800件样品，得出在各时代地层、岩石中金的含量与中国地壳的克拉克值（2．25×10－9）及全球的克拉克值（2．19×10-9）相近，与国内外有关研究结果类同；矿区地层（围岩）中的金含量也表现出与区域地层的一致性；前寒武纪地层有时代越老金含量越低的趋势。笔者认为，前寒武纪地层中出现的大量金矿床（点），其金的来源与赋矿地层关系不大。About 800 samples which were sampled from Middle-Late Precambrian and other strata were analyzed. The results show the gold contents of Precambrian strata are (1. 25- 3. 92 )× 10-9, mostly close to the Clarke value (2. 25 × 10 -9 ). There is a tendency in Precambrian strata that the older the strata. the lower the gold content. Gold contents may several to tens of times higher than the average value in the area. All the results are consistent with those obtained at home and abroad. The authors think that the gold may come from some geological bodies underlying the upper strata.

关 键 词：地层 含金性 湘黔地区 金矿物 前寒武纪 

分 类 号：P534.1[天文地球—古生物学与地层学] P578.11[天文地球—地质学]