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UK | |
| 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. |
| Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. Dawson, J. and Harrison, R.K. (1966) Uraninite in the Greinsgill greisen, Cumberland. Bulletin of the Geological Survey of Great Britain, 25, 91. |
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| Min.Rec.:20(5):395. |
Hendre Quarry, Ceiriog Ucha, Wrexham, Wales, UK