The copper-gold vein deposit of Kivimaa at Tervola, N-Finland

The copper-gold vein deposit of Kivimaa at Tervola, N-Finland

Blog Article

The Kivimaa ore vein in Northern Finland is located in a shear zone in a folded greenstone bed.The vein is c.350 metres in pale pink sns length and varies from 1 to 6 metres in thickness.The central and most mineralized part of the vein was mined in 1969, c.

18 000 t of ore were produced averaging 1.2 % Cu and 2 g/t Au.Coarse-grained calcite and quartz form the base of the vein and the major ore minerals are donitsirauta pyrite, magnetite and chalcopyrite.Comparable with analogous sulphide-bearing veins in the Karelian metadiabases in Eastern Finland the Kivimaa ore vein is assumed to have formed as the final differentiate of initial spilitic greenstone magmatism.