Scientific publications

The authors discuss various primary types of ores (with noble metals), their mineral and mineralogical composition and the metallogenic specialization of igneous complexes. The intrusive basic-hyperbasic magmatism and alteration zones of these rocks concentrate PGE. Alteration zones in metakomatiites and intrusive ultrabasic rocks with sulphide mineralization, including those at contacts with the porphyry dykes that cut the bodies, are expected to host PGE and gold. In the Hautavaara-Vedlozero prospect and in other structures of the Vedlozero-Segozero greenstone belt gold accumulation at the early accretionary stage of evolution was simultaneous with the deposition of the volcanic-sedimentary complexes of the Vietukkalampi and Kalajärvi suites with pyrite ore horizons. Intrusive granitoid bodies and alteration zones in their aureole, as well as structurally controlled units confined to near-N-S-trending shear zones, are most essential at the collision stage.