STRUCTURAL-MATERIAL AND MINERALOGICAL CRITERIA OF BELONGING OF GOLD-PLATINOID ORES IN FERRUGINEOUS QUARTZITES AND BLACK SHALES TO A SINGLE ORE-FORMING SYSTEM
New data on the paleoproterozoic noble metal bearing structural-material complexes and their parageneses in two spatially separated and different in composition of enclosing ferrugineous quartzites and black shales ore districts of KMA are presented. A multi-stage character of the formation of noble-metal types of ores is established; the same type of composition of the mineral phases in the ferruginous quartzites, shales and metasomatites is determined, what is indicating it as a part of a single long developing ore-forming system. The generalized model of the formation of the noble metal bearing ore-forming system in case of a genetically variable sources of material is given.