Penouta
Viana do Bolo, Ourense (Galicia), Spain
Magmatic (Ni-Cu-PGE, carbonatites)Sn-Ta-Nb
- Type
- Albite leucogranite and Sn-Ta greisens
Greisenised Variscan albite leucogranite cupola, mined for tin and tantalum; one of the main tantalum deposits of Europe. Indicative coordinates.
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.3 ± 0.07 ‰ | −0.37 / −0.2 ‰ | 5 | greisen cassiterite Mean and standard deviation recalculated from 5 samples, Table 2. Ore age used by the authors: 295 Ma. | Mathur et al. (2025), Global Sn isotope compositions of cassiterite identify the magmatic… |
| −0.38 ‰ | 1 | granite cassiterite One analysis, Table 2. Ore age used by the authors: 295 Ma. | Mathur et al. (2025), Global Sn isotope compositions of cassiterite identify the magmatic… | |
| −0.02 ± 0.05 ‰ | −0.11 / 0.02 ‰ | 5 | primary cassiterite from greisens Mean and standard deviation recalculated from 5 samples, Appendix A4. Mean δ124/120Sn of -0.13 ‰ (Puratronic). Replicates of a sample averaged. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 32.9586 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, Mina Penouta). Partly radiogenic lead: the value depends on the uranium content of the ore. | Williams et al. (2025), From Land's End to the Levant: did Britain's tin sources transfor… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 16.4122 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, Mina Penouta). Partly radiogenic lead: the value depends on the uranium content of the ore. | Williams et al. (2025), From Land's End to the Levant: did Britain's tin sources transfor… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 39.155 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, Mina Penouta). Partly radiogenic lead: the value depends on the uranium content of the ore. | Williams et al. (2025), From Land's End to the Levant: did Britain's tin sources transfor… |
Deposits of the same type
- Golpejas Spain
- Montebras France
- Échassières (Beauvoir granite) France
- Varuträsk Sweden
- Keliber (Central Ostrobothnia) Finland
- Abu Dabbab Égypte
- Eastern Desert (Mueilha, Igla, Nuweibi) Égypte
- Pechenga Russia
Cite this page
IsoFind Atlas (2026). Penouta, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/penouta/ (accessed 2026-10-13).
@misc{isofind2026penoutaisotopesignatures,
title = {Penouta, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/penouta/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13