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UK | |
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| Martyn Coles collection |
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| Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.
Fluorite: The Collector's Choice. Extra Lapis English No. 9 |
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| Dunham Sir K C. 1990. Geology of the Northern Pennine Orefield. Vol 1. Tyne to Stainmore. HMSO |
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| Martyn Coles collection |
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| Dunham Sir K C. 1990. Geology of the Northern Pennine Orefield. Vol 1. Tyne to Stainmore. HMSO |
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| DUNHAM, K.C. 1990. Geology of the Northern Pennine Orefield, Volume 1 Tyne to Stainmore (2nd edition) pp 230, 232. |
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| Dunham: The Geology of the Northern Pennine Orefield, Vol I Tyne to Stainmore pp 141&142. |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 136-138, 143-144 |
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| [J.Ralph collected] |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 129. |
Alston Moor District, Cumbria, England, UK