Melt and high-density fluid inclusions of magmatic water in phenocrysts of quartz from acidic volcanic rocks of the Verkhneural’sk ore district, South Urals

On the basis of comprehensive study of melt inclusions in quartz phenocrysts in acidic volcanic rocks, a study determined the composition of primary magmatic melts; the contents of trace elements, H2O, Cl, S; and the pressure and composition of magmatic fluid for the first time in the Verkhneuralsk ore district, South Urals. Results indicate the high-temperature high-pressure aqueous fluids originated in degassing acidic magmatic melts revealed in many objects in the World allow for the consideration of the real involvement of these fluids in hydrothermal ore formation