Viseu district (tin fields)
Viseu district, Beira Alta, Portugal
Other hydrothermalSn (W)
- Type
- Granite-related cassiterite veins and greisens
Many small tin mines of the Viseu district (Sabrosa, Covas do Estanho, Sequeiros, Parada de Ester, Fontainhas, Lagares, Bejanca), veins and pegmatites. 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 |
|---|---|---|---|---|
| 0.3 ± 0.46 ‰ | −0.45 / 1.03 ‰ | 14 | primary cassiterite Mean and standard deviation recalculated from 14 samples, Appendix A3. Mean δ124/120Sn of 0.02 ‰ (Puratronic). Replicates of a sample averaged. Breakdown (δ124Sn): Mina de Sabrosa 0.66, 0.77; Covas do Estanho -0.45, -0.37; Sequeiros S.W. 1.03; Parada de Ester, Couto E. -0.02, -0.38; Mina das Fontainhas 0.54, 0.35; Mina dos Lagares 0.27, 0.59; Bejanca 0.12, 0.55; Lagares 0.52. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
| 0.66 ± 0.04 ‰ | 0.63 / 0.68 ‰ | 2 | secondary cassiterite (placers) Mean and standard deviation recalculated from 2 samples, Appendix A7. Mean δ124/120Sn of 0.18 ‰ (Puratronic). Replicates of a sample averaged. Breakdown (δ124Sn): Mina de Sabrosa 0.68; Vales, Penalva de Castelo 0.63. | Marahrens (2021), Tin isotope analysis of tin ore deposits in Europe and Central Asia in … |
Deposits of the same type
- Aveiro district (Regoufe, Bustelo) Portugal
- Panasqueira Portugal
- Castelo Branco district (Fonte das Galoas, Gaia) Portugal
- Porto district (Rebordosa, Friande) Portugal
- Guarda district (Belmonte, Torrinhas, Fonte do Seixo) Portugal
- Valongo (vein field) Portugal
- Vila Real district (including Borralha) Portugal
- Viana do Castelo district (Caminha, Fontão) Portugal
Cite this page
IsoFind Atlas (2026). Viseu district (tin fields), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/district-de-viseu-champs-stanniferes/ (accessed 2026-10-13).
@misc{isofind2026viseudistricttinfieldsisotope,
title = {Viseu district (tin fields), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/district-de-viseu-champs-stanniferes/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13