Mourne Mountains (tin placers)
County Down, Northern Ireland, United Kingdom
OtherSn
- Type
- Placer cassiterite
Placer cassiterite from streams of the Palaeogene Mourne granite complex (about 56 Ma). Cassiterite studied by Marahrens (2021) for Bronze Age tin provenance. Indicative coordinates.
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.89 ± 0.14 ‰ | 0.68 / 1 ‰ | 5 | secondary cassiterite (placers) Mean and standard deviation recalculated from 5 samples, Appendix A7. Mean δ124/120Sn of 0.30 ‰ (Puratronic). Replicates of a sample averaged. Breakdown (δ124Sn): Pollaphuca 0.68; Shanky's River 0.98; Leitrim River Headwaters 0.97; Round Seefin 0.82, 1.00. | 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 |
|---|---|---|---|---|
| 24.8335 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (surface placer, Pollaphuca). 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 |
|---|---|---|---|---|
| 15.9721 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (surface placer, Pollaphuca). 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 |
|---|---|---|---|---|
| 38.752 | 1 | cassiterite concentrate (bulk lead) Single analysis, "Lead isotopes - tin ores" sheet of OSM2 (surface placer, Pollaphuca). 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
- Mount Gabriel Irlande
- Derrycarhoon Irlande
- Cappaghglass Irlande
- Ballyrisode Irlande
- Derrynane Irlande
- Eyller Bruch bog iron ore Germany
- Benasque Pass mines (Mina Peak) Spain
- Largentière France
Cite this page
IsoFind Atlas (2026). Mourne Mountains (tin placers), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/montagnes-de-mourne-placers-stanniferes/ (accessed 2026-10-13).
@misc{isofind2026mournemountainstinplacersisot,
title = {Mourne Mountains (tin placers), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/montagnes-de-mourne-placers-stanniferes/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13