摘要
已发现的金矿物有60余种。本文将其分为七类。在附表中列有20种较常见的金矿物及其鉴定特征。金在自然界中有三种赋存状态:可见独立矿物形式;呈次显微状于载体矿物中;或以原子状态混入其他矿物。金的工业矿物以第一种赋存状态为主,它们常与黄铁矿、毒砂、黄铜矿、磁黄铁矿、闪锌矿、方铅矿、黝铜矿和石英等连生,或以其作为载体矿物。呈次显微状的金,是以粒径小于0.2um的球粒形质点,呈机械混入物状态于黄铁矿等硫化物中。
More than 60 Known gold minerals could be divided into 7 types,among which 20 common ones and their discriminating features are listed in the attached table. Gold has three types of occurrence in nature: as visible minerals or submicroscopic grains in host minerals, or in atomic states mingled in other minerals. Most of the industrial gold minerals occur as visible minerals and they often intergrown with pyrite,chalcopyrite,arse-nopyrite, pyrrhotite, sphalerite, galena, tetrahedrite, quartz and other minerals or are hosted in them. Submicroscopic gold occurs in sulphide minerals such as pyrite as very tiny (<2μm)spherical inclusions mechanically mingled.Hence, studies on gold minerals and their occurrence are not only important for mineral and ore interests,but also significant for genesis studying, appraisal of a ore deposit and ore processing.
关键词
金矿物
赋存状态
载体
矿物
gold mineral, occurrence, submicroscopic grains
