gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1950.029.211.11 Studies of Mineral Sulpho-Salts: XV. Xanthoconite and Pyrostilpnite1 Peacock M. A. 2 Professor of Crystallography and Mineralogy, University of Toronto, Canada

Contributions to Mineralogy from the Department of Geological Sciences, University of Toronto, 1950, no. 5. No. XIV of this series is by Robinson (1948); no. XIII, by Peacock and Berry (1947), appeared in this Magazine.

The sad news of Professor Martin Alfred Peacock's sudden death on October 30 was received during the preparation of this number.

 12 1950 29 211 346 358 Copyright © 1950, The Mineralogical Society 1950