Tervaskoski
Norrbotten, Sweden
SkarnsFe (Cu)
- Type
- Skarn iron ore (magnetite)
Locally copper-bearing skarn iron ore (0.1 % Cu): magnetite, pyrite, chalcopyrite and pyrrhotite, the copper-rich part following wall-rock fracturing. Volcano-sedimentary iron ore of the Lapponian Greenstone group (2.0 to 2.5 Ga), metamorphosed during the Svecokarelian orogeny. The widely scattered δ34S and disequilibrium between sulfides indicate bacterial reduction of seawater sulfate. Indicative coordinates: Tervaskoski rapids, consistent with the map of the publication.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −4.4 / 8 ‰ | ore and skarn sulfides Published range: +2.3 to +8.0 ‰, plus one skarn at -4.4 ‰; complete data not published. | Frietsch et al. (1995), Sulphur isotopes in Lower Proterozoic iron and sulphide ores in n… |
Deposits of the same type
- Junosuando (Masugnsbyn field) Sweden
- Stora Sahavaara Sweden
- Dannemora Sweden
- Berggießhübel Germany
- Medenec Czechia
- Sarrabus Italy
- Su Zurfuru Italy
- Santa Lucia (Buggerru) Italy
Cite this page
IsoFind Atlas (2026). Tervaskoski, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/tervaskoski/ (accessed 2026-10-13).
@misc{isofind2026tervaskoskiisotopesignatures,
title = {Tervaskoski, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/tervaskoski/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13