IMPORTANCE OF OLISTOSTROME MEMBER FOR METALLOGENY OF LJUBIJA IRON ORE DEPOSITS

Abstract

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findings came from many years of fieldwork and synthesis of all published and unpublished data related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