摘要
矿床产于Ｆ＿１与Ｆ＿２两个北北东向大断裂所夹持的次级北东向构造裂隙中，其特点是：伟晶岩的分异作用不好，脉体内不具分带现象，脉体即是矿体，稀有元素矿化与分异作用的好坏无关，含挥发分和稀碱金属矿物少，稀有元素矿化（和锡、钨）均与伟晶岩晚期结晶的钠长石有密切关系，矿田内伟晶岩脉具水平分带现象。
The deposit is enriched in NE secondary-order structural cracks between tow NNE large fractures,i.e.F_1 and F_2. Thecharacteristics are:(1)the differentiation is poor, there are not zoning phenomena in pegmatitic veins.(2) Rare element mineral-ization is not related with differentiation,veins are ore bodies.3)Volatile components are poor. (4)Besides early Be mineraliza-tion, Ta, Nb, Zr, Hf, Be(in late stage),Sn , Wn mineralization are closely related with late crystallized albite.(5)There areobvious horizontal zoning phenomenon.
出处
《地质与勘探》
CAS
CSCD
北大核心
1995年第6期15-22,共8页
Geology and Exploration
关键词
钽
铌
铍
矿床地质
花岗伟晶岩
Ta-Nb-Be granite pegmatite , geofogical characteristics,criteria for ore prospecting,Guangxi
