gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1944.027.187.01 Boracite from a boring at Aislaby, Yorkshire1 Guppy E. M. B.Sc. Harvey C. O. B.Sc., A.R.C.Sc., F.R.I.C. Geological Survey and Museum of Great Britain

Communicated by permission of the Director, Geological Survey and Museum.

 12 1944 27 187 51 53 Copyright © 1944, The Mineralogical Society 1944