Abstract
Oxidation of the ores from the Arkharly deposit was favored under the conditions of the dry and hot climate in the Paleozoic, leading to dissolution of gold and silver, their migration in acid solutions and further deposition on appropriate geochemical barriers, when opportunity arose for sedimention of hardly soluble salts of chlorides, bromides and iodides.Described are interesting findings of silver halide minerals in the oxidation zone of the Arkharly deposit, in a state of accretions with native silver and gold.Native silver, gold and silver-containing sulphides are sources of silver for halide minerals, as witnessed by their zonal accretions.Among silver halide minerals, identified in thin rims were chlorargyrite, brome iodide, embolite, and iodyrite.The hypergene nature of gold is indicated by its close paragenesis with silver and silver halides.