Muscovite from selected localities.
UK | |
| [var: Illite] Ineson, P.R. and Mitchell, J.G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111, 521-537.; Cooper, M.P. and Stanley, C.J. (1990) Minerals of the English Lake District: Caldbeck Fells. Natural History Museum Publications, London, 160 pp. (referring to Ineson & Mitchell, 1974). |
[var: Illite] Ineson, P.R. and Mitchell, J.G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111, 521-537.; Cooper, M.P. and Stanley, C.J. (1990) Minerals of the English Lake District: Caldbeck Fells. Natural History Museum Publications, London, 160 pp. (referring to Ineson & Mitchell, 1974). | |
| [var: Illite] Ineson, P.R. and Mitchell, J.G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111, 521-537.; Cooper, M.P. and Stanley, C.J. (1990) Minerals of the English Lake District: Caldbeck Fells. Natural History Museum Publications, London, 160 pp. (referring to Ineson & Mitchell, 1974). |
Mike Leppington collection (visual ID) | |
| [var: Illite] Ineson, P.R. and Mitchell, J.G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111, 521-537.; Cooper, M.P. and Stanley, C.J. (1990) Minerals of the English Lake District: Caldbeck Fells. Natural History Museum Publications, London, 160 pp. (referring to Ineson & Mitchell, 1974).; Bridges, T.F., Green, D., Rumsey, M.S., and Leppington, C.M. (2011) A review of the mineralisation of the Roughton Gill mines, Caldbeck Fells, Cumbria: Part 3 Roughton Gill Mine. Journal of the Russell Society, 14, 3-23. |