|
UK | |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Kingsbury, Arthur W. G. (1957) Rockbridgeite from Cornwall and Devon. Mineralogical Magazine and Journal of the Mineralogical Society, 31 (236). 429-430 doi:10.1180/minmag.1957.031.236.14 |
- Perran Iron Lode (Great Perran Iron Lode)
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. [J.Russel Soc 1998:15 |
Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, Cornwall, England, UK