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

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

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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 length and varies from 1 to 6 metres in thickness.

The central and most mineralized part of the vein was ultrastar dc hc550 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 luau thank you cards the vein and the major ore minerals are 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.