gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1993.057.387.19 Short Communications Sodium-Zippeite from Geevor Mine, St. Just, Cornwall Elton N. J. Tregears, Little Treviscoe, St Austell, Cornwall PL26 7QL Hooper J. J. 48 St. Julitta, Luxulyan, Bodmin, Cornwall PL30 5ED 6 1993 57 387 352 354 22 6 1992 18 9 1992 Copyright © 1993, The Mineralogical Society 1993 Keywords sodium-zippeite zippeite Geevor mine Cornwall