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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 232, 235-237. |
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| Dunham K C. 1948. Geology of the Northern Pennine Orefield. Vol 1, Tyne to Stainmore. HMSO |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 226-227. |
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| Bridges T. F., Young B. (2007): Geology and mineralogy of Pike Law Mines, Newbiggin, Teesdale, Co. Durham. Journal of the Russell Society, 10, 18-26. |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 193 |
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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, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 173-178. |
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| Rocks & Min.: 15:57. |
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| Dunham, K. C., (1990), Geology of the North Pennine Orefield, Vol. 1, British Geological Survey |
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| R. A. Ixer, C. J. Stanley and D. J. Vaughan (1979) Cobalt-, Nickel-, and Iron-Bearing Sulpharsenides from the North of England. Mineralogical Magazine 43:389-395. |
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| Dunham, Sir K C> Geology of the Northern Pennine Orefield. Vol 1, Tyne to Stainmore. 1990 (HMSO) |
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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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| Dunham Sir K C, Geology of the Northern Pennine Orefield, Vol 1, Tyne to Stainmore. HMSO |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 129. |
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| DUNHAM, K.C. 1990. Geology of the Northern Pennine Orefield, Volume 1 Tyne to Stainmore (2nd edition) pp 230 |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 167-171 |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 164-165 |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 154 |
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| Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 1 Tyne to Stainmore (2nd Edition), pp 158-159 |
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Brownley Hill Mine, Nenthead, Alston Moor, Eden, Cumbria, England, UK