摘要
广西波塘地区的稀土矿为我国南方花岗岩风化壳离子吸附型稀土矿床,成矿母岩为华力西期,印支期的黑云母花岗岩岩类,原岩稀土含量211×10^-6-354×10^-6.笔者主要介绍了波塘矿床的基本特征、稀土元素配分,认为有利的成矿母岩是稀土含量〉200×10^-6的黑云母花岗岩类.广泛分布的黑云母花岗岩类,有利于风化壳形成保留的温暖潮湿气候条件,丘陵浅山的地理环境是华南花岗岩风化壳离子吸附型稀土矿成矿的主要条件.
REE deposits in Botang area of Cenxi are ion-adsorption type REE deposits in weathered crust of granite in South China,and the mother rock is Variscan-Indosinian biotite granite rocks,with rare earth con-tent in protolith of 21 1×10 -6 ~354×10 -6 .This paper introduced the basic characteristics and REE assemblage of Botang deposits,and it believed that the favorable mother rock is biotite granite rocks with REE content of above 200ppm.The widely distributed biotite creates a favorable warm and humid climate condition for the forming of weathered crust,and the environment of shallow hills is the prevailing condition of ore-form-ing of ion-adsorption type REE deposits in weathered crust of granite in South China.
出处
《矿产与地质》
2014年第6期679-684,698,共7页
Mineral Resources and Geology
