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| Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London. Harker, A. (1894) Carrock Fell: a study in the variation of igneous rock masses - part I. The Gabbro. Quarterly Journal of the Geological Society of London, 50, 311-337. |
| 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. Davidson, W.F. and Thomson, N. (1951) Some notes on the minerals of Westmorland and Cumberland. North West Naturalist, 23 (for 1948), 136-154. |