Redeposition of Gold in Uranium-Bearing Solutions: A Key to Formation of Gold-Uranium Mineralization

摘要

The study of uraninite dissolution in muriatic solutions revealed redeposition of metallic gold. Experiments were conducted in thin-walled gold ampoules under the temperature of 500℃ and pressure of 1 kbar in oxidizing-reducing conditions provided by the buffer pair Ni-NiO (logf_(H_2)) = 0.24. Prior to this study, the gold dissolution phenomenon in similar experiments was mentioned only in [2]. Those authors noted that gold capsules were corroded in most experiments by haloid solutions and that small gold chips were found in either water solutions or silicate glasses.