四川省壤塘县斯约武锂、铌钽矿床地质特征及成因研究

Geological Features and Genesis of lithium,niobium and tantalum deposits,Sri Lanka,Rangtang County in Sichuan Province

本矿床位于斯约武与纳合花岗岩体外接触带。矿化伟晶岩墙大多受NE向纵向节理控制,并位于幕阜山岩体的边缘。矿区内已发现4条主要矿体,它们通常呈脉状,延深约数百米。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、黑钨矿、锂辉石、石英和绿柱石等,它们主要分布于分异晚期的块体带中。经研究表明,该矿床为一岩浆-交代伟晶岩型矿床,成因上与斯约武和纳合花岗岩体有关。

The deposit is located in the outer contact zone of granit siyuewu and nahe. the Mineralized pegmatite dykes are mostly controled by the north-east vertical joints and are located in the edge of the rock Mufushan. we have found four main ore bodies that look like veins within the mining area extending hundreds of meters long. The ore body has granitic pegmatite texture and banded structure. The minerals which contain Niobium, tantalum including niobite, tantalite, wolframite, spodumene, quartz and beryl, etc., which are mainly distributed in the zone of the differentiational late block. The research shows that this deposit is a magmatic-metasomatic pegmatite type deposit, and it is originly related to the granit siyuewu and nahe.