gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1988.052.365.14 Topographic and Systematic Mineralogy Seventh Supplementary List of British Isles Minerals (Irish) Ryback George 42 Bell Road, Sittingbourne, Kent ME10 4EB, England Nawaz Rab Department of Geology, Ulster Museum, Botanic Gardens, Belfast BT9 5AB, Northern Ireland Farley Eileen Geological Section, National Museum of Ireland, 7-9 Merrion Row, Dublin 2, Eire 4 1988 52 365 267 274 3 4 1987 Copyright © 1988, The Mineralogical Society 1988