Muurinsuo (Hattu schist belt)
North Karelia, Ilomantsi, Hattu schist belt, Finland
Orogenic goldAu
- Type
- Orogenic gold in metasediments
Archaean schist belt (2.76 to 2.72 Ga) of the Karelian domain, with felsic to intermediate volcano-sedimentary rocks cut by tonalites, granodiorites and felsic porphyries; Au-Bi-Te gold in shear zones, older than the metamorphic peak (500 to 600 °C, 3 to 5 kbar, about 2.70 Ga). Tourmalinized, sericitized and biotitized metasediments along N-S and NE-SW shear zones. Molnár et al. (2016): tourmaline δ11B, sulphide δ34S and chalcopyrite δ65Cu.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.7 ± 0.3 ‰ | 1.7 / 3.5 ‰ | 33 | pyrrhotite of metasediments Mean and standard deviation recalculated from the means of 4 samples (KN15732 +3.1 (n = 7); KN15647 +2.3 (n = 9); KN15648 +2.6 (n = 10); KN14993 +2.6 (n = 7)), i.e. 33 spot analyses from +1.7 to +3.5 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
| 0.4 ± 0.4 ‰ | −0.1 / 0.8 ‰ | 4 | chalcopyrite of metasediments Published mean and standard deviation of 4 spot analyses (sample KN15648), -0.1 to +0.8 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
δ65Cu in ‰ (per mil) Values of the same system
Standard : NIST SRM 976
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.06 ± 0.36 ‰ | −0.4 / 0.6 ‰ | 6 | chalcopyrite of metasediments (KN15648) Mean and standard deviation recalculated from 6 analyses, -0.40 to +0.60 (+0.03; +0.60; -0.40; -0.08; -0.18; -0.32). Positive values mostly in felsic intrusive rocks, negative in metasediments; no correlation with δ34S according to the authors. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
Deposits of the same type
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- Kalgoorlie (Golden Mile) Australia
- Victorian Goldfields Australia
- Ashanti (Obuasi) Ghana
- Loulo (district de Gara-Yalea) Mali
- Gounkoto Mali
- Massawa Senegal
- Kirkland Lake (Macassa mine) Canada
Cite this page
IsoFind Atlas (2026). Muurinsuo (Hattu schist belt), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/muurinsuo-ceinture-de-hattu/ (accessed 2026-10-19).
@misc{isofind2026muurinsuohattuschistbeltisoto,
title = {Muurinsuo (Hattu schist belt), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/muurinsuo-ceinture-de-hattu/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19