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| Bridges, T.F., Green, D.I., Rumsey, M.S., Leppington, C.M. (2008) A review of the mineralisation at Red Gill Mine, Caldbeck Fells, Cumbria, England. Journal of the Russell Society, 11. 29-47 Stanley, Christopher J., Cooper, Michael P. (1991) Famous Mineral Localities: Pyromorphite-Group Minerals from the Caldbeck Fells, Cumbria, England. The Mineralogical Record, 22 (2) 105-121 Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. Jackson, B. (1990) Queitite, a first Scottish occurrence. Scottish Journal of Geology, 26(1), 57-58. R. S. W. Braithwaite, , Michael P. Cooper, , Hart, Alan D. (1989) Queitite, a mineral new to Britain, from the Caldbeck Fells, Cumbria. Mineralogical Magazine, 53 (372) 508-509 doi:10.1180/minmag.1989.053.372.11 |
| Stanley, Christopher J., Cooper, Michael P. (1991) Famous Mineral Localities: Pyromorphite-Group Minerals from the Caldbeck Fells, Cumbria, England. The Mineralogical Record, 22 (2) 105-121 Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. |
| Jackson, B. (1990) Queitite, a first Scottish occurrence. Scottish Journal of Geology, 26(1), 57-58. |
| Mason, J.S., Green, D.I. (1995) Supergene minerals including exceptional ramsbeckite from Penrhiw Mine, Ystumtuen, Dyfed. UK Journal of Mines and Minerals 15, Rockbottom Publications. 21-27 |