Isovaara (Masugnsbyn field)
Norrbotten, Sweden
Banded iron formationsFe
- Type
- Quartz-banded iron ore
Quartz-banded ore in the northern Masugnsbyn field. 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.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 4.2 / 5.6 ‰ | 4 | ore sulfides Published range for 4 samples; complete data not published. | Frietsch et al. (1995), Sulphur isotopes in Lower Proterozoic iron and sulphide ores in n… |
Deposits of the same type
- Marjajärvi (Marjarova) Sweden
- Isua (BIF) Greenland
- Jingshansi (Wuyang) China
- Carajás Brazil
- Qidashan China
- Gongchangling China
- Iron Quadrangle, high-grade hematite ores (eastern region) Brazil
- Cauê Formation (Quadrilátero Ferrífero) Brazil
Cite this page
IsoFind Atlas (2026). Isovaara (Masugnsbyn field), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/isovaara-champ-de-masugnsbyn/ (accessed 2026-10-13).
@misc{isofind2026isovaaramasugnsbynfieldisotop,
title = {Isovaara (Masugnsbyn field), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/isovaara-champ-de-masugnsbyn/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13