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 |
|---|---|
| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Geological Society of Finland
1974
|
| 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. |
|---|