San Finx
Lousame, A Coruña (Galicia), Spain
Other hydrothermalSn-W
- Type
- Cassiterite-wolframite quartz veins
Variscan tin-tungsten vein field of Galicia, worked since the 19th century. Indicative coordinates.
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.28 ‰ | 1 | cassiterite One analysis, Table 2. | Mathur et al. (2025), Global Sn isotope compositions of cassiterite identify the magmatic… | |
| 0.27 ± 0.33 ‰ | −0.01 / 1 ‰ | 8 | primary cassiterite from greisens, San Finx mines Mean and standard deviation recalculated from 8 samples, Appendix A4. Mean δ124/120Sn of 0.01 ‰ (Puratronic). Replicates of a sample averaged. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
| 0 ± 0.28 ‰ | −0.35 / 0.27 ‰ | 4 | primary cassiterite, other Lousame samples Mean and standard deviation recalculated from 4 samples, Appendix A4. Mean δ124/120Sn of -0.11 ‰ (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 |
|---|---|---|---|---|
| 19.8242 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, San Finx (Cusuni)). 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 |
|---|---|---|---|---|
| 15.8056 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, San Finx (Cusuni)). 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 |
|---|---|---|---|---|
| 39.402 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (underground vein, San Finx (Cusuni)). 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
- A Coruña Province (various tin occurrences) Spain
- Pontevedra Province (Silleda, Tui, Forcarei) Spain
- Galicia (unspecified origin) Spain
- Viana do Castelo district (Caminha, Fontão) Portugal
- Ourense Province (tin fields) Spain
- Vila Real district (including Borralha) Portugal
- Porto district (Rebordosa, Friande) Portugal
- Valongo (vein field) Portugal
Cite this page
IsoFind Atlas (2026). San Finx, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/san-finx/ (accessed 2026-10-13).
@misc{isofind2026sanfinxisotopesignatures,
title = {San Finx, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/san-finx/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13