gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1981.044.334.20 Short Communications Triplite from the Megiliggar Rocks, Cornwall George M. C. Stone M. Department of Geology, University of Exeter, North Park Road, Exeter, EX4 4QE Fejer E. E. Symes R. F. Department of Mineralogy, British Museum (Natural History), Cromwell Road, London, SW7 5BD 6 1981 44 334 236 238 14 1 1981 Copyright © 1981, The Mineralogical Society 1981