This paper considers peculiarities in element composition of geological objects of the Klimovskaya area, which is a part of the larger Chupa-Louhi area within the White Sea mobile belt of Northern Karelia. It has been revealed that the following four main geochemical types of ore mineralization are characteristic of this area: Pt, Pd; Au, Bi, Ag; Cu, Ni, Co; Pb, Zn, Cd. Presence of two perspective types of noble metal mineralization has been confirmed, which are sulfide bearing metasomatic rocks replacing amphibolites, having essentially palladium with minor platinum mineralization, and quartz enriched zones with gold-bismuth-silver mineralization. Secondary halos have been detected in loose deposits of the local Keretsky area which makes it possible to forecast zones of Pt-Pd and Au-Bi-Ag mineralization in bedrocks.
Features of element and mineral composition of the Alattu and Yanis gold occurrences in the Yanisyarvi district of South Karelia are considered. It was established that ore minerals in the Alattu deposit were formed during the pre-mining (arsenopyrite-quartz), early (gold-arsenopyrite), middle (freibergite-sphalerite-galenite), late (pyrrotite-gudmundite-native antimony), and hypergenic stages. The main (Au-As) and (Zn-Pb-Ag-Cu-Bi) elemental associations related to mineral associations of the early and middle ore stages were identified. The Au-Bi-Ag-Sn-Pb-W element association established in the Yanis deposit suggests a gold-red-metal ore type.
