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UK | |
| Elton, N., Green, D., Hooper, J., Weiss, S. (2004) Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. UK Journal of Mines and Minerals 24, Rockbottom Publications. 9-28 |
- Perran St George and Droskyn Mines
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Betterton, J. (2000) Famous Mineral Localities: Penberthy Croft Mine, St. Hilary, Cornwall, England. UK Journal of Mines and Minerals 20, Rockbottom Publications. 7-37 |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
South Tolcarne Mine, Beacon, Camborne, Cornwall, England, UK