关键词: 多拉纳萨依, 金矿, 氧化带, 别列则克河, 砂金矿

Abstract: Dolanasayi gold deposits crosses the bilizik river, locates the upper of the Area of the Gold-placer. About 30 m of the surface layer of the Oxidized Belt, the structure of rocks is loosed, gold-containing quartz-veins are broken, but with their original states. The grade of the oxidized belt is higher than its original deposits’. The alluvial sediments which around the gold deposits contain placer-gold but their grades are very low. In the Bilizik River, placer-gold becomes enrichment.
Having studied the shapes, sizes of the golds and their change, the companied minerals which in the oxidized belt of the gold deposits, in the streams around the deposits, in the bilizik River, we concluded that the oxidized belt of the Dolanasayi Gold Deposits is the main source of the Bilizik River Gold-placer.