华南酸性岩类风化壳稀土元素的生物地球化学及矿体贫化问题探讨  

A Study on REE Biogeochemistry of the Weathering Crust of Acid Rocks and Impoverishment of REE Orebodies in South China

作　　者：陈炳辉[1,2] 毋福海[3] 黄丽玫[3] 王智美[3] 徐文烈[4] 陈敬德[2] 

机构地区：[1]南京大学地球科学系,210093 [2]中山大学地球科学系,广州510275 [3]广东药学院,广州510224 [4]中山大学化学与化工学院,广州510275

出　　处：《地质论评》1999年第S1期805-808,共4页Geological Review

基　　金：广东省自然科学基金资助项目(编号960042)

摘　　要：本文简述了华南酸性岩类风化壳稀土元素生物地球化学研究现状。研究了几种氨基酸对稀土元素从花岗岩中溶出和在花岗岩风化壳中迁移的作用,结果表明大多数氨基酸可以促使稀土元素从花岗岩中溶出和在风化壳中迁移,尤以长链酸的作用较为明显。对比研究了华南停采的风化壳稀土矿的矿体表层和内部的品位变化,显示了矿体表层发生了贫化,其结果会对矿山生态环境产生负面影响。The REE biogeochemistry of the weathering crust of acid rocks in south China was reviewed. Then effects of some amino acids on the dissolution of REE from granites as well as on the downward migration of REE in weathering profiles of the granites were studied. The results show that most of the studied amino acids can accelerate the dissolution and migration of REE in the weathering profiles. The impoverishment of REE orebodies in the weathering crust and its environmental pollution were also studied at the end of the paper.

关 键 词：酸性岩 风化壳 稀土元素 氨基酸 矿体贫化 

分 类 号：P593[天文地球—地球化学]