Korvilansuo-Kivisuo (Hattu schist belt)
North Karelia, Ilomantsi, Hattu schist belt, Finland
Orogenic goldAu
- Type
- Orogenic gold in metasediments and felsic porphyries
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). Metasediments with tourmalinite layers and mineralized felsic porphyries (2756 ± 6 Ma at Kivisuo), near the western margin of the Kuittila pluton. Molnár et al. (2016): tourmaline δ11B, sulphide δ34S and chalcopyrite δ65Cu.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −16 ± 1.2 ‰ | −17.9 / −13.6 ‰ | 18 | metasomatic tourmalinite layer of metasediments (type 4) (KUS_25) Mean and standard deviation recalculated from 18 analyses, -17.9 to -13.6 (-15.6; -17.4; -17.3; -17.5; -15.4; -14.2; -15.7; -15.5; -15.8; -17.9; -14.0; -16.6; -15.5; -17.0; -16.3; -17.0; -13.6; -15.7). 10 core and 8 rim analyses; published mean -16.0 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 3.8 ± 1.7 ‰ | 2 / 6.2 ‰ | 11 | pyrite of metasediments Mean and standard deviation recalculated from the means of 3 samples (KN17274 +5.7 (n = 3); KN31874 +3.4 (n = 6); KUS-25 +2.3 (n = 2)), i.e. 11 spot analyses from +2.0 to +6.2 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
| 3.9 ± 1.1 ‰ | 2.1 / 5.6 ‰ | 17 | pyrrhotite of metasediments Mean and standard deviation recalculated from the means of 4 samples (KN17274 +5.1 (n = 4); KN31874 +3.7 (n = 7); KN31871 +4.1 (n = 2); KUS-25 +2.5 (n = 4)), i.e. 17 spot analyses from +2.1 to +5.6 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
| 2.4 ± 0.4 ‰ | 1.8 / 3 ‰ | 6 | chalcopyrite of metasediments Published mean and standard deviation of 6 spot analyses (sample KN31871), +1.8 to +3.0 ‰. | Molnár et al. (2016), Boron, sulphur and copper isotope systematics in the orogenic gold … |
| 3.9 ± 0.4 ‰ | 3.3 / 4.6 ‰ | 6 | pyrrhotite of feldspar porphyries Published mean and standard deviation of 6 spot analyses (sample KN31878), +3.3 to +4.6 ‰. | 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 |
|---|---|---|---|---|
| −0.24 ± 0.62 ‰ | −1.11 / 0.49 ‰ | 6 | chalcopyrite of metasediments (KN31871) Mean and standard deviation recalculated from 6 analyses, -1.11 to +0.49 (-0.72; -0.06; +0.36; -1.11; +0.49; -0.40). 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
- Muruntau Uzbekistan
- 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). Korvilansuo-Kivisuo (Hattu schist belt), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/korvilansuo-kivisuo-ceinture-de-hattu/ (accessed 2026-10-19).
@misc{isofind2026korvilansuokivisuohattuschist,
title = {Korvilansuo-Kivisuo (Hattu schist belt), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/korvilansuo-kivisuo-ceinture-de-hattu/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19