莫桑比克阿尔特里哥纳伟晶岩区概貌  

An introduction to Alto Ligonha pegmatite province in Mozambique

作　　者：叶水泉 黄建平[2] 夏明飞[2] 

机构地区：[1]华东有色地质勘查局,江苏南京210007 [2]江苏省地质调查研究院,江苏南京210018

出　　处：《江苏地质》2006年第1期10-12,共3页Jiangsu Geology

摘　　要：莫桑比克阿尔特里哥纳是世界著名的伟晶岩区之一,蕴藏着丰富的稀有金属、稀土、水晶和宝石等矿产资源。伟晶岩脉及其矿体的分布受北北东—北东向和北西向断裂控制,北北东—北东向分布的伟晶岩矿床以稀有金属矿种为主,北西向分布的伟晶岩矿床以稀土金属矿种为主。伟晶岩体及其矿体呈脉状和透镜状等,规模大,富含钽铁矿、铌铁矿、锂云母、锂辉石、绿柱石、独居石、铌钇矿、烧绿石和泡铋矿等矿物。伟晶岩年龄410M a^560M a,是泛非构造运动的产物。按岩浆凝固浓度等分类,伟晶岩类型为稀有金属伟晶岩,部分为浅成、晶洞状伟晶岩;按化学成分等分类,伟晶岩以钠锂型为主,部分为钾型。伟晶岩体有明显的结构分带。Alto Ligonha is one of the world famous regions for its pegmatite where rare metals and rare earth, crystals and gemstone re- sources are abundant. The distribution of pegmatite veins and their orebodies are controlled by the fractures of NNE to NE strike and NE strike. The pegmatite deposits distributed in NNE to NE strike are rich in rare metal minerals, while those distributed in NW strike are rich in rare earth metal minerals. The ore deposits and mineral resources are depicted in the text.

关 键 词：矿床特征 伟晶岩 阿尔特里哥纳 莫桑比克 

分 类 号：P588.1[天文地球—岩石学]