gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1985.049.350.21 Short Communications Pekoite from Narechen, Bulgaria—A Possible Solution to the Bonchevite Problem Birch W. D. Department of Mineralogy and Petrology, Museum of Victoria, 285 Russell Street, Melbourne, Victoria 3000, Australia Mumme W. G. Division of Mineral Chemistry, CSIRO, PO Box 124, Port Melbourne, Victoria 3207, Australia 3 1985 49 350 135 137 24 4 1984 20 6 1984 Copyright © 1985, The Mineralogical Society 1985 pekoite bonchevite Narechen Bulgaria