Limonite from Trefeirig, Ceredigion, Wales, UK
UK | |
| Jones, A. D. (1987) The minerals of Llechwedd Helyg. UK Journal of Mines and Minerals 3, 25-27 |
| P Haas, inspection of the dump in 2005 |
UK | |
| Jones, A. D. (1987) The minerals of Llechwedd Helyg. UK Journal of Mines and Minerals 3, 25-27 |
| P Haas, inspection of the dump in 2005 |