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一、引言 鄂东北某原生金矿为含多金属硫化物的石英脉金。其成因与混合岩化变质热液有关。金载体原生硫化物有黄铁矿、黄铜矿、闪锌矿及方铅矿。其中黄铁矿含Au3.02g/T;黄铜矿含Au2.22g/T;方铅矿含Au13.0g/T。经氧化后氧化带中见有褐铁矿、矽孔雀石、铅矾、黄钾铁矾等。其中褐铁矿含Au13.0g/T,与方铅矿相当,比其它硫化物含金高。光片观察金矿物多见于褐铁矿中,尤其是淋失洞处更为多见,且粒径往往比在其它
I. INTRODUCTION A native gold mine in Northeastern Hubei is a quartz vein gold containing polymetallic sulphides. Its causes and mixed petrified metamorphic hydrothermal. The gold-bearing primary sulphides are pyrite, chalcopyrite, sphalerite and galena. Among them, pyrite contains Au3.02g / T; chalcopyrite contains Au2.22g / T; galena contains Au13.0g / T. Oxidation of the oxidation zone with limonite, malachite, lead alum, jarosite and so on. The limonite containing Au13.0g / T, equivalent to galena, gold than other high sulfide. Light film observation of gold minerals more common in limonite, especially leaching holes more common, and the particle size is often higher than the other