广西栗木花岗岩型铌钽矿床特征及富集规律研究  

Characteristics and enrichment regularity of Limu granite-type niobium-tantalum deposit in Guangxi

作　　者：邓宾 吴祥珂 张美玲 DENG Bin;WU Xiangke;ZHANG Meiling(Geological Survey Institute of Guangxi Zhuang Autonomous Region,Nanning 530023,Guangxi,China;Reservation and Evaluation Center,Department of Natural Resources,Guangxi Zhuang Autonomous Region,Nanning 530023,Guangxi,China)

机构地区：[1]广西壮族自治区地质调查院,广西南宁530023 [2]广西壮族自治区自然资源厅储评中心,广西南宁530023

出　　处：《矿产与地质》2022年第2期220-225,共6页Mineral Resources and Geology

基　　金：中国地质调查局地质矿产调查评价专项“广西三稀资源综合研究与重点评价”(编号:1212011220818)资助。

摘　　要：栗木花岗岩型铌钽矿在南岭多金属成矿带中占有重要的地位。近些年学者通过最新测试方法获得栗木花岗岩年代学、成因及演化的最新成果,并对矿床特征、控矿因素、找矿评价等方面进行综合探讨。在综合前期研究成果基础上,对岩体的垂向分带进行研究,确定富钠长石花岗岩带为Ta、Nb的最大富集部位,认为部分微量元素及Ta、Nb在深部含量降低。水溪庙矿区-25中段及金竹源矿区190中段的深部存在铌钽矿体可能性不大,找矿应向矿体外围隐伏岩体寻找。Limu granite-type niobium-tantalum deposit is an important deposit in the Nanling polymetallic metallogenic belt.In recent years,scholars have obtained the latest results of the chronology,genesis and evolution of Limu granite through the latest testing methods,and a comprehensive discussion is conducted on the deposit characteristics,ore-con-trolling factor and ore-prospecting evaluation.On the basis of the previous research results,the vertical zonation of the rock mass is studied,and the albite-rich granite belt is determined to be the largest enrichment site of Ta and Nb.It is considered that the contents of some trace elements and Ta and Nb decrease in the deep part.It is unlikely that there are niobium-tantalum orebodies in the deep part of the-25 middle section in Shuiximiao mining area and the 190 middle section in Jinzhuyuan mining area.The prospecting work should be focus on the hidden rock mass outside the orebody.

关 键 词：栗木铌钽矿 矿床特征 富集规律 广西 

分 类 号：P618.79[天文地球—矿床学] P618.86[天文地球—地质学]