Castelo Branco district (Fonte das Galoas, Gaia)
Castelo Branco district, Portugal
Other hydrothermalSn (W)
- Type
- Granite-related cassiterite veins and greisens
Tin mines of the Castelo Branco district other than Panasqueira (Fonte das Galoas, Gaia). 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 |
|---|---|---|---|---|
| 0.65 ± 0.2 ‰ | 0.43 / 0.82 ‰ | 3 | primary cassiterite Mean and standard deviation recalculated from 3 samples, Appendix A3. Mean δ124/120Sn of 0.19 ‰ (Puratronic). Replicates of a sample averaged. Breakdown (δ124Sn): Mina da Fonte das Galoas 0.82, 0.70; Gaia 0.43. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
| 0.69 ‰ | 1 | secondary cassiterite (placers), Gaia One analysis, Appendix A7. Mean δ124/120Sn of 0.20 ‰ (Puratronic). Replicates of a sample averaged. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
Deposits of the same type
- Panasqueira Portugal
- Guarda district (Belmonte, Torrinhas, Fonte do Seixo) Portugal
- Viseu district (tin fields) Portugal
- Aveiro district (Regoufe, Bustelo) Portugal
- Torrecilla de los Ángeles Spain
- Portalegre district (Santa Eulália, Elvas) Portugal
- Cáceres Province (unspecified origin) Spain
- Porto district (Rebordosa, Friande) Portugal
Cite this page
IsoFind Atlas (2026). Castelo Branco district (Fonte das Galoas, Gaia), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/district-de-castelo-branco-fonte-das-galoas-gaia/ (accessed 2026-10-13).
@misc{isofind2026castelobrancodistrictfontedas,
title = {Castelo Branco district (Fonte das Galoas, Gaia), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/district-de-castelo-branco-fonte-das-galoas-gaia/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13