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UDC 551.263.12.038:(553.491.8:549)(571.5) EXOTIC POLYMINERAL ORE SHOOTS IN THE TRAPPEAN INTRUSIONS OF THE SIBERIAN PLATFORM
In gabbro-doleritic intrusions of the Kureika-Gorbiachinsky volcano-pluton clusters of minerals different in compositions, the number of which in one local rock site is 50–60 and more grains, are found. They represent various combinations of Pt, Pd, Au, Ag, Cu, Ni, Co, Fe, Bi, Pb, Zn, Sn, As, Sb, S, and Ge. Mineral phases of these clusters are classes and groups of minerals known in the Norilsk ore deposits, as well as first findings of minerals having unusual composition and their varieties in traps and nature. It is assumed that the leading role in the formation of polymineral clusters was played by hydrocarbon fluids. They extracted metals from tholeiite-basaltic melt creating volatile heterometal-organoelemental compounds, migrated in the melt, and at geochemical barriers they dissociated forming mineral phases different in composition. The source of the mineral-forming chemical elements was coal beds and basaltic melt.
Key words: platinum deposit, Siberian Рlatform, trappean intrusion, mineralogy.
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