Ourense Province (tin fields)
Ourense Province, Galicia, Spain
Other hydrothermalSn (W)
- Type
- Granite-related cassiterite veins and greisens
Tin occurrences of Ourense Province other than Penouta (Vilar de Cervos, Val de Orras, Pentes, Beariz, Avión, Sarreaus, Vilameá). Cassiterite studied by Marahrens (2021) for Bronze Age tin provenance. Approximate position of the administrative district; mines are listed in the notes. Indicative coordinates.
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.11 ± 0.38 ‰ | −0.4 / 0.6 ‰ | 10 | primary cassiterite Mean and standard deviation recalculated from 10 samples, Appendix A4. Mean δ124/120Sn of -0.06 ‰ (Puratronic). Replicates of a sample averaged. Breakdown (δ124Sn): Vilar de Cervos 0.58, -0.40, 0.48; Val de Orras 0.01; Pentes -0.05; Beariz 0.29; Avión -0.33, 0.24; Sarreaus 0.60; Vilameá -0.29. | 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 |
|---|---|---|---|---|
| 21.0244 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (placer, Vilar de Cervos). 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 |
|---|---|---|---|---|
| 15.8373 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (placer, Vilar de Cervos). 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 |
|---|---|---|---|---|
| 39.425 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (placer, Vilar de Cervos). 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
- Vila Real district (including Borralha) Portugal
- Galicia (unspecified origin) Spain
- Bragança district (Portelo, Ribeira) Portugal
- Calabor Spain
- Pontevedra Province (Silleda, Tui, Forcarei) Spain
- Viana do Castelo district (Caminha, Fontão) Portugal
- Porto district (Rebordosa, Friande) Portugal
- A Coruña Province (various tin occurrences) Spain
Cite this page
IsoFind Atlas (2026). Ourense Province (tin fields), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/province-d-ourense-champs-stanniferes/ (accessed 2026-10-13).
@misc{isofind2026ourenseprovincetinfieldsisoto,
title = {Ourense Province (tin fields), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/province-d-ourense-champs-stanniferes/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13