gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1997.061.405.20 The Castleton Area, Derbyshire Howie R. A. 4 1997 61 405 327 327 Ford T. D. The Castleton Area, Derbyshire London Geologist's Association 1996 0-900717-98-X Price £8.50. Copyright © 1997, The Mineralogical Society 1997