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UK | |
| Day, Harry (1999) BMS Database, British Micromount Society. |
| Day, Harry (1999) BMS Database, British Micromount Society. |
| Rust, S. A., Mason, J. S. (1988) The Minerals of Esgair Hir Mine, Bwlch-y-Esgair Hir, Ceulanymaesmawr, Dyfed, Wales . UK Journal of Mines and Minerals 5, 35-43 |
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| Chris Popham Collection |
| S. Rust collection |
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| Chris Popham Collection |
| Jones, A. D. (1987) The minerals of Llechwedd Helyg. UK Journal of Mines and Minerals 3, 25-27 |
- Upper Llanfihangell-y-Creuddyn
| Rust, Steve A. (2019) Minerals of the Frongoch Mine. Published by the author, 180 pages. ISBN 978-1-9162641-0-6. Day, Harry (1999) BMS Database, British Micromount Society. Green, D.I., Rust, S.A., Mason, J.S. (1996) Classic British mineral localities: Frongoch mine, Dyfed. UK Journal of Mines and Minerals 17, Rockbottom Publications. 29-39 |
- Lisburne Lead and Silver Mines
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Lodge Park Trial, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK