| Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. 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 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. |