江西横峰松树岗岩体多期次钽铌成矿作用特征  

Characteristics of multiphase tantalum niobium mineralization in songshugang pluton,Hengfeng,Jiangxi Province

作　　者：张彦伟 ZHANG Yan-wei(Jiangxi Nonferrous Geological and mineral exploration and Development Institute,Nanchang 330001,China)

机构地区：[1]江西有色地质矿产勘查开发院,江西南昌330001

出　　处：《世界有色金属》2020年第19期87-88,共2页World Nonferrous Metals

摘　　要：江西横峰松树岗隐伏花岗岩体是一个高度演化的稀有金属花岗岩体,岩体从下往上分别为钠长石化花岗岩、云英岩化花岗岩与云英岩、伟晶岩壳。这些特征表明成矿元素在岩浆分异作用过程中富集。矿石显微岩相分析与扫描电镜观察结果表明Ta、Nb成矿具有岩浆结晶作用与热液作用两阶段过程,热液作用使矿石更富Ta。The songshugang concealed granite body in Hengfeng,Jiangxi Province is a highly evolved rare metal granite body,which consists of albitization granite,greisenization granite and greisen and pegmatite crust from bottom to top.These characteristics indicate that the ore-forming elements are enriched in the process of magmatic differentiation.The results of microscopic lithofacies analysis and scanning electron microscope observation show that the mineralization of Ta and Nb has two stages:magmatic crystallization and hydrothermal process,which makes the ore rich in Ta.

关 键 词：钽铌成矿作用 松树岗 横峰 江西 

分 类 号：P618.79[天文地球—矿床学]