Два типа рудной минерализации золото-полиметаллического рудопроявления Балки Широкой (Среднее Приднепровье)

Abstract

Quartz-polymetal mineralization in volcanic metasomatites (propylites) (1) was transformed by a metamorphism (530–450 ◦ С) which destroyed the fluid inclusion system and disturbed the sulfur isotope equilibrium in sulfides. The Au−Ag−Pb−Zn ores in beresites (2) were formed by the post metamorphic activity with generation of the epithermal regressive sulfide-bearing system close to the equilibrium temperature range 420–110 ◦ С. In view of the difference in tendencies for the 34 S content to vary in ore systems, the inversion of ore-forming conditions from the oxidizing (1) to restoring (2) ones took place.