摘要
川西花岗伟晶型锂矿(甲基卡式)是四川省最主要的锂矿类型(占全省锂矿资源的98%以上)。该类型锂矿床(点)均产于甘孜—松潘陆内造山带中,受封闭型热穹窿构造控制。含矿伟晶岩脉多成群成带常围绕印支期重熔分异型二云母二长花岗岩质"母岩"呈中心式带状分布,并与渐进式接触变质带紧密共生,构成"体—带—脉—晕多位一体"成矿模式。不同类型的矿脉或岩脉在时空、成份等方面常具定向演化及分异特点,形成铍铌—锂—钽铯(锡)的成矿系列。同一矿脉中常常有多种稀有元素(矿物)共生、伴生,形成综合矿床。
The granitic pegrnatite type （Jiajika type） Li deposits in West Sichuan are confined to the Songpan-Garze orogenic zone and controlled by closed thermic dome. The host pegmatite veins occur as belt in the center of remelting biotite monzogranite and are associated with contact metamorphic zone. Associated elements are Be, Nb, Ta, Cs and Sn and so on. A quaternity genetic model of body-belt-vein-hole is put forward.
出处
《四川地质学报》
2015年第3期391-395,共5页
Acta Geologica Sichuan
关键词
锂矿
地质特征
成矿模式
川西
Li deposit
geological feature
metallogenic model
west Sichuan
