青海抗得弄舍金多金属矿床金银的赋存状态研究

通过显微镜及电子探针分析手段对青海抗得弄舍金多金属矿床金矿石中金、银的赋存状态进行详细的研究。结果表明,矿石中金矿物主要为银金矿,其次为自然金,嵌布状态以粒间金为主,其次为包裹金和裂隙金;银矿物以银金矿为主,其次为自然银,部分以类质同像形式赋存于黝铜矿中;主要载金、银矿物有闪锌矿、方铅矿、黄铜矿、黝铜矿、黄铁矿、褐铁矿、重晶石、石英等。对金银赋存状态的研究为选矿工艺设计及探讨矿床成因提供了依据。

Study on the occurrence of gold and silver in Qinghai Kangdenongshe polymetallic deposit

The occurrence of gold and silver in Qinghai Kangdenongshe polymetallic deposit is detailedly studied with the help of mineralogical microscope and electronic probe. The results show that the most contained gold minerals are electrums and followed by native gold,taking the form of intergranular gold and the rest taking the form of crack gold and inclusion gold. Similarly the most contained silver minerals are electrum and followed by native silver, and some occur in tetrahedrite with isomorphism form. The main gold and silver carried mineral is sphalerite, galena, ehalcopyrite, tetrahedrite, barite and quartz. The research on the occurrence of gold and silver will provide reference for the design of mineral processing processes and also the discussion of ore genesis.