Montánchez granite (Alcuéscar, La Nava)
Cáceres Province, Extremadura, Spain
Other hydrothermalSn
- Type
- Granite-related cassiterite veins
Tin occurrences of Alcuéscar and La Nava, around the Variscan Montánchez granite; ores supplied by Z. Stos-Gale (C. Merideth collection) and studied by Williams et al. (2025). Indicative coordinates.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 20.8002 / 172.2363 | 2 | cassiterite concentrate (bulk lead) Range of 2 ores, "Lead isotopes - tin ores" sheet of OSM2 (underground vein). Cassiterite lead is partly radiogenic and spreads along an isochron: no representative central value. Sites: Alcuescar, La Nava. | 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 |
|---|---|---|---|---|
| 15.7748 / 23.8105 | 2 | cassiterite concentrate (bulk lead) Range of 2 ores, "Lead isotopes - tin ores" sheet of OSM2 (underground vein). Cassiterite lead is partly radiogenic and spreads along an isochron: no representative central value. Sites: Alcuescar, La Nava. | 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 |
|---|---|---|---|---|
| 38.548 / 38.626 | 2 | cassiterite concentrate (bulk lead) Range of 2 ores, "Lead isotopes - tin ores" sheet of OSM2 (underground vein). Cassiterite lead is partly radiogenic and spreads along an isochron: no representative central value. Sites: Alcuescar, La Nava. | Williams et al. (2025), From Land's End to the Levant: did Britain's tin sources transfor… |
Deposits of the same type
- La Parrilla Spain
- Cáceres Province (unspecified origin) Spain
- Logrosán (Cerro de San Cristóbal) Spain
- Torrecilla de los Ángeles Spain
- Portalegre district (Santa Eulália, Elvas) Portugal
- Azuaga-Fuenteobejuna district Spain
- Gibla (Seville district) Spain
- Los Pedroches (batholith exocontact occurrences) Spain
Cite this page
IsoFind Atlas (2026). Montánchez granite (Alcuéscar, La Nava), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/granite-de-montanchez-alcuescar-la-nava/ (accessed 2026-10-13).
@misc{isofind2026montanchezgranitealcuescarlan,
title = {Montánchez granite (Alcuéscar, La Nava), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/granite-de-montanchez-alcuescar-la-nava/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13