North Wales orefield (Halkyn, Holywell, Talargoch)
Flintshire (Wales), United Kingdom
Other hydrothermalPb-Zn
- Type
- Pb-Zn veins in Carboniferous limestones, oxidised near surface
Pb-Zn veins with fluorite and quartz in the Carboniferous limestones of Halkyn Mountain; smithsonite and cerussite as thin layers around galena and sphalerite. Sulfide oxidation at about 15 to 20 °C, under a climate warmer than today (Boni et al., 2019). Indicative coordinates.
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 27.9 ± 0.4 ‰ | 27.5 / 28.2 ‰ | 4 | supergene smithsonite Mean and standard deviation recalculated from 4 samples, Table 1. Specimens from the Natural History Museum (London) and private collections. | Boni et al. (2019), Stable isotopes of nonsulphide Zn-Pb ores in Britain and Ireland: flu… |
| 17.6 ± 0.2 ‰ | 17.5 / 17.8 ‰ | 2 | supergene cerussite Mean and standard deviation recalculated from 2 samples, Table 1. Specimens from the Natural History Museum (London) and private collections. Halkyn and Jamaica mine. | Boni et al. (2019), Stable isotopes of nonsulphide Zn-Pb ores in Britain and Ireland: flu… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −5.3 ± 5.2 ‰ | −11.4 / 0.7 ‰ | 4 | supergene smithsonite Mean and standard deviation recalculated from 4 samples, Table 1. Specimens from the Natural History Museum (London) and private collections. | Boni et al. (2019), Stable isotopes of nonsulphide Zn-Pb ores in Britain and Ireland: flu… |
| −19.2 ± 0.2 ‰ | −19.4 / −19.1 ‰ | 2 | supergene cerussite Mean and standard deviation recalculated from 2 samples, Table 1. Specimens from the Natural History Museum (London) and private collections. Halkyn and Jamaica mine. | Boni et al. (2019), Stable isotopes of nonsulphide Zn-Pb ores in Britain and Ireland: flu… |
Deposits of the same type
- Shelve (Ladywell mine) United Kingdom
- Roughtongill (Caldbeck Fells) United Kingdom
- Swaledale (Grinton Moor) United Kingdom
- North Pennine orefield (Alston Moor, Hilton, Scordale) United Kingdom
- Leadhills-Wanlockhead United Kingdom
- Dartmoor granite United Kingdom
- Hingston Down (quarry, Calstock) United Kingdom
- Kit Hill granite (Callington) United Kingdom
Cite this page
IsoFind Atlas (2026). North Wales orefield (Halkyn, Holywell, Talargoch), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/champ-minier-du-nord-du-pays-de-galles-halkyn-holywell-talargoch/ (accessed 2026-10-13).
@misc{isofind2026northwalesorefieldhalkynholyw,
title = {North Wales orefield (Halkyn, Holywell, Talargoch), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/champ-minier-du-nord-du-pays-de-galles-halkyn-holywell-talargoch/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13