Pyrite from Trefeirig, Ceredigion, Wales, UK
UK | |
| Chris Popham Collection |
Chris Popham Collection | |
Chris Popham Collection | |
| |
| Day, Harry (1999) BMS Database, British Micromount Society. |
Jones, A. D. (1987) The minerals of Llechwedd Helyg. UK Journal of Mines and Minerals 3, 25-27 | |
| Day, Harry (1999) BMS Database, British Micromount Society. |
Chris Popham Collection |
Bwlch Ystyllen Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK