| Ryback, G., Hart, A.D., Stanley, C.J. (2001) A.W.G. Kingsbury's specimens of British minerals. Part I : Some examples of falsified localities. Journal of the Russell Society, 7 (2) 51-71 Day, Harry (1999) BMS Database, British Micromount Society. Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. Braithwaite, R.S.W. (1988) Cuproadamite and tennantite from Higher Longrigg mine, Hartley Birkett, Cumbria. Mineralogical Magazine, 52(367), 552-553. Young, B. (1987) Glossary of the minerals of the Lake District and adjoining areas. British Geological Survey, Newcastle upon Tyne. 104pp. Hartley, J. (1984) A list of minerals associated with the ore deposits of the Caldbeck Fells, Cumbria. Transactions of the Leeds Geological Association, 10 (3) 22-39 Spencer, L.J. (1958) Third supplementary list of British minerals. Mineralogical Magazine, 31, 787-806. Kingsbury, A.W.G. and Hartley, J. (MS) (1951) New occurrences of rare minerals in the northern part of the English Lake District: part 1. |