PGE potential of Kulibinsk potential ore unit (East Sayan)

The objects of the study are mafic-ultramafic complexes of Kulibinsk potential ore unit, including intrusive bodies of kingashsk complex and metavolcanic rocks of kuliginskaya and kuzinskaya series; the studied objects are located at the north-western edge of Kansk greenstone belt in East Sayan. The relevance of the study is due to the appearance of new data on geological formations of the Kansk Greenstone Belt, which are the object of extensive discussions. Our studies showed a high potential of the territory associated with low-sulfidic type of PGE (platinum-group elements) mineralization, which founded in mafic-ultramafic bodies of kingashsk dunite-verlite-picritic magmatic complex. The highest concentrations of PGE are associated with footwalls of metapicritic bodies, where Pd concentrations reach 1 ppm with Pd/Pt ratio = 5-20. We characterized ore-bearing series, described features of their geochemical zoning, chemical and mineral composition, patterns of distribution of ore components. By the set of signs, PGE-metal deposits of Portimo complex (Finland) were proposed as the object-analogue.