摘要
巴马花岗斑岩型稀有金属矿床是广西新发现的稀有金属矿床。该矿床位于巴马-民安北西-南东向复式短轴背斜的核部,矿体主要由57条花岗斑岩脉组成,花岗斑岩脉中锂(Li_2O 0.31%)、铍(Be O0.23%)、铌(Nb2O50.006%)、钽(Ta2O50.003%)等稀有金属元素达到工业矿床要求。此外,还含有一定量的铷和铯等其他稀有金属元素。根据矿床地质特征分析,认为铌钽金属成矿可能与气成热液有关。
The rare metal ore deposit of granite porphyry type in Bama is newly found in Guangxi. The ore deposit locates in the core of the Bama-Minan short-axis anticlinorium with the axial northwest-southeast direction.It consists of 57 granite porphyry veins. The rare metal contents of Li_2O( 0. 31%),BeO( 0. 23%),Nb_2O_5( 0. 006%) and Ta_2O_5( 0. 003%) in the granite porphyry veins up to the national industrial grades. The granite porphyry veins also contain some amount of other rare metals,e. g. Rb and Cs. Based on its geological features,the mechanism of Nb,Ta rare metal mineralization is possibly related with pneumatolytic solution.
引文
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