The knowns always out weigh the green box nonsense4 Oct 2022 20:13
"Sulfide PGEโCuโNi and Low-Sulfide PtโPd Ores of the Monchegorsk Ore District (Arctic Western Sector)
During the recent exploration of the Monchegorsk ore district (MOD) in the Arctic western sector, the platinum potential of known CuโNi deposits (Nittis-Kumuzhya-Travyanaya (NKT), Nyud, Ore Horizon 330 (OH330), and Terrasa) has been assessed, and new sulfide PGEโCuโNi deposits (Western Nittis) and manifestations (Moroshkovoe Ozero, Poaz, and Arvarench), and low-sulfide PtโPd deposits (Loipishnyun, Southern Sopcha, and Vuruchuaivench) have been discovered. All of them are confined to Paleoproterozoic (ca. 2.5 Ga) layered intrusions (the Monchegorsk pluton (Monchepluton) and the Monchetundra massif) and are divided into two types according to their structural position: basal, located in the marginal parts of intrusions, and reef-type (stratiform). All types of ores show Pd specialization. Platinum group minerals (PGM) have a limited composition in sulfide PGEโCuโNi ores and are represented by predominant Pt and Pd compounds with Bi and Te and subordinate PGE arsenides and sulfides. Low-sulfide PtโPd ores are characterized by a significant variety of PGM, with a predominance of PGE sulfides, bismuthide-tellurides, and arsenides. Sulfide PGEโCuโNi deposits and manifestations (Western Nittis, NKT, Nyud, Moroshkovoe Ozero, Poaz, and Arvarench) formed through the accumulation of base metal sulfides and PGE in immiscible sulfides and their subsequent segregation in commercial contents. The reef-type OH330 deposit and Terrasa manifestation resulted from the injection of additional portions of sulfur-saturated magma. The basal-type low-sulfide PtโPd deposits (Loipishnyun and Southern Sopcha) formed from residual melts enriched in ore components and fluids separated and crystallized during long-term oreforming processes. The reef-type Vuruchuaivench deposit is the result of deep fractionation of the parental magma with the formation of a sulfide liquid enriched in Cu and PGE. Significant reserves and large predicted resources of sulfide PGEโCuโNi and low-sulfide PtโPd ores are a reliable mineral resource base for the development of the mining industry in the Kola region of the Arctic western sector."
https://ui.adsabs.harvard.edu/abs/2022RuGG...63..519C/abstract
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