Au-Cu mineralization at Palai-Islica occurs as disseminations in massive silicified volcanic rocks and, more abundantly, in sulphide-bearing quartz veins. The major ore minerals in the deposit are pyrite ± chalcopyrite, sphalerite and galena and there is a great variety of accessory minerals, including Au-Ag alloys and native gold. Pyrite, the most abundant sulphide, is closely associated with ...

To assess the possibility of selective disintegration and reduction overgrinding hard-to-reproduce ores, optical microscopic X-ray microtomographic studies were carried out quantitative characteristics morphological parameters disseminated rich cuprous ore samples from Norilsk-type Oktyabrsky deposit identified. Among most informative are area, perimeter, edge roughness, sphericity, elongation ...