The copper-gold vein deposit of Kivimaa at Tervola, N-Finland
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 mined in 1969, c. 18 000 t of ore were produced averaging 1.2 % Cu and...
Published in: | Bulletin of the Geological Society of Finland |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Geological Society of Finland
1974
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Subjects: | |
Online Access: | https://doi.org/10.17741/bgsf/46.1.005 https://doaj.org/article/0e21f95bd31041d6a0924298bf0a7c64 |
Summary: | 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 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 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. |
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