gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1948.028.202.05 Pyroxene from the Squilver Dolerite, South Shropshire Blyth F. G. H. M.Sc., F.G.S. Geology Department, Imperial College of Science and Technology, London. 9 1948 28 202 380 383 Copyright © 1948, The Mineralogical Society 1948