Strengite from Cornwall, England, UK
UK | |
| Craik-Smith, B. (2000): British Micromount Society Newsletter 55, 8 |
| 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. |
Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, Cornwall, England, UK