gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1980.043.331.25 Short Communications Kidwellite from Cornwall Braithwaite R. S. W. Chemistry Department, University of Manchester Institute of Science and Technology, Manchester M60 1QD Corke Hilary ‘Eversheds’, Abinger Hammer, Surrey 9 1980 43 331 952 953 17 3 1980 Copyright © 1980, The Mineralogical Society 1980