Vanadium and Cobalt Occurrence in the Fe-Ti-V Oxide Deposits Related to Mesoproterozoic AMCG Complex in NE Poland

On the basis of geochemical whole-rock and mineralogical point analyses, concentrations V Co were determined in magnetite-ilmenite oxide ores, associated with sulphides, at Krzemianka Udryn deposits Mesoproterozoic Suwałki Anorthosite Massif (SAM) NE Poland. EPMA analyses showed that main carrier vanadium was magnetite (mean = 0.42 wt%) and, to a lesser extent, ilmenite 0.14 minor Al-spinels 0.04 wt%). In turn, cobalt found mainly form isomorphic substitutions magmatic sulphides such as pentlandite 4.41 wt% Co), pyrrhotite 0.16 wt%), chalcopyrite 0.11 Moreover, Co-enrichments also recognized secondary pyrite bravoite, replacing (means 1.6 2.7 Co, respectively), different thiospinels ((Fe, Ni) (Co, Ni)2S4), siegenite 22.0 pentlandite. Vanadium cations substituted Fe, Ti minerals place Fe+3 cations, case cobalt, Fe+2 thiospinels. high Person’s correlation coefficients (r 0.70), indicating their close spatial coexistence common source, which parental anorthosite-norite magma SAM suites. The genesis sulphide mineralization confirmed by very similar shapes curves REE content oxide-sulphide ores relation chondrite, negative Eu anomalies positive Sm are clearly visible. Although average contents low (arithmetic means 960 ppm, 122 resources these metals estimated be large due enormous reserves hosted SAM. However, Fe-Ti-V Ni, Cu considered sub-economic because depth occurrence (mainly 1.0 km below surface level); metal contents, usually too low; additionally fact location is highly environmentally protected landscape lake area.