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UK | |
| Day, Harry (1999) BMS Database, British Micromount Society. |
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| 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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| Day, Harry (1999) BMS Database, British Micromount Society. |
- 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. 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 Mason, J.S. (1994) A Regional Paragenesis for the Central Wales Orefield. Unpublished external M.Phil. degree thesis, University of Wales, Aberystwyth. |
| Day, Harry (1999) BMS Database, British Micromount Society. |
| National Museum of Wales database National Museum of Wales database |
| Day, Harry (1999) BMS Database, British Micromount Society. |
- Lisburne Lead and Silver Mines
| Day, Harry (1999) BMS Database, British Micromount Society. |
Mynydd Gorddu Mine, Bontgoch, Ceulanymaesmawr, Ceredigion, Wales, UK