西秦岭江里沟钨铜钼矿床矿石类型及矿物组合

Ore type and mineral assemblage of Jiangligou W-Cu-Mo deposit in Western Qinling

江里沟钨铜钼矿床位于西秦岭西段同仁地区,经对其进行详细的宏观、微观矿石学基础研究,包括矿石类型、矿物特征、成矿期次的划分等,表明矿石类型为原生矿石,分为矽卡岩型、角岩型、云英岩型、斑岩型矿石,以矽卡岩型为主;主要有用矿物为黄铜矿、白钨矿、辉钼矿,次要矿物有黄铁矿、方铅矿、闪锌矿及褐铁矿等,脉石矿物主要有石榴子石、透辉石、阳起石、绿帘石、方解石、石英、萤石等;成矿期次初步划分为两期5阶段,早期矽卡岩阶段形成钨矿。

Jiangligou W-Cu-Mo deposit is located in the Tongren area in the west part of the Western Qinling.This paper has studied on the basic macroscopic and microscopic mineralogy in detail,including ore type,mineral characteristics and division of metallogenic phases.Ore type is primary ore,which can be divided into skarn type,horny type,greisen type,porphyry type,mainly dominated by the skarn type.The main useful minerals are chalcopyrite,scheelite,molybdenite and the minor minerals are pyrite,galena,sphalerite and limonite.The gangue minerals are mainly garnet,diposite,actinolite,epidote,calcite,quartz and fluorite.The ore-forming period is divided into two phases and 5stages.Tungsten deposit is formed in the early skarn stage.