摘要
矿床位于幕阜山花岗岩体南西缘与板溪群片岩接触带伟晶岩密集区。矿化伟晶岩墙大多受 NEE向纵向节理控制 ,并位于幕阜山岩体的边缘。矿区内已发现 7个矿体 ,它们通常呈脉状 ,延深约 1 0 0 m。矿石为花岗伟晶结构和条带状构造。含铌、钽的矿物主要包括铌铁矿、钽铁矿和绿柱石 ,它们主要分布于分异晚期的块体带中。地球化学和同位素研究表明 ,该矿床为一岩浆 -交代伟晶岩型矿床 ,成因上与幕阜山花岗岩体有关。
The deposit located in the pegmatite compact districts of contact between southwest Mnfu mountain rock mass and schist of Banxi Group. The mineralized pegmatite dykes are mostly controlled by NEE-striked longitudinal joints and lie in the marginal facies of Mufu mountain rocks mass. Seven ore bodies have been found and are usually veined extending deeply about 100 m. Ores show pegmatoidal granitic taxture and banded structure. Nb- and Ta-bearing minerals are niobite, tantalite and beryl which are mainly distributed in the massive belts formed during late peroid of differentiation. The geochemical characteristics and isotope age suggest that the deposit is a magma-metasomatic pegmatite-type deposit relating genetically to Mufu mountain granitic mass.
出处
《华南地质与矿产》
CAS
2003年第2期63-67,共5页
Geology and Mineral Resources of South China
