IMPORTANCE OF OLISTOSTROME MEMBER FOR METALLOGENY OF LJUBIJA IRON ORE DEPOSITS

Ljubija mining area is built of more formations that belong to the Carboniferous, Permian, Triassic andCenozoic. From all of these, only two are metalliferous to iron: Javorik formation with olistostromemember and Neogene-Quaternary of Prijedor basin. The first includes primary siderite and ankeritepartially limonitised ore and in the second only redeposited limonite (limonite pieces and dust, knownunder the commercial name "brand"). Appearance of iron is also in other members of Javorik formationand other formations, but these are just thin veins. They have no significance for the economicexploitation but are an important element in the interpretation of metallogeny in the region. Thesefindings came from many years of fieldwork and synthesis of all published and unpublished data relatedto iron ore in this area.Therefore, this work gives special importance to olistostrome member, its stratigraphic position andmetallogenic characteristics.