gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1986.050.358.23 Short Communications Waylandite: New Data, from an Occurrence in Cornwall, with a Note on ‘Agnesite’ Clark A. M. Couper A. G. Embrey P. G. Fejer E. E. Department of Mineralogy, British Museum (Natural History), Cromwell Road, London SW7 5BD 12 1986 50 358 731 733 6 7 1986 Copyright © 1986, The Mineralogical Society 1986 Keywords waylandite crandallite group agnesite St Agnes Restormel Cornwall