Forms of occurrence metals and metalloids in products of the Mutnovsky volcano gas-hydrothermal activity

On the basis of concentrate analysis of the Mutnovsky volcano thermal sites substance, new data of the ore elements forms of occurrence were obtained. In the course of large-scale hydrothermal alteration of volcanic rocks, with the participation of magmatic fluids and meteoric waters, metals and metalloids are transported to the surface, which are concentrated in the form of the main or impurity components of new-forming minerals. Sulfides of copper, zinc, mercury, silver and barium sulfate are confidently diagnosed, in which, in addition to mineral-forming Zn, Cu, Hg, Ag and Ba, admixtures of Mn, Cd, Sr, I, Cl, Te, Pb are present. Micron-sized phases were found containing Ru, Os and Ir (laurite), Pb (galena) as the main components, as well as intermetallic compounds (Fe–Ni), (Fe–Ir–Os), (Pb–Bi), (Bi–Te) and native Au. Most of the new-forming mineral individuals are associated with a mineral of the pyrite-marcasite group, which contains admixtures of As, Cu, Ni, and Co. Platinoids Os, Ir, Ru among the new-forming minerals within the East Kamchatka volcanic belt were discovered for the first time.