gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1960.032.251.13 Book Reviews Journal of Petrology 12 1960 32 251 671 672 Brown G. M. Nockolds S. R. Journal of Petrology 1960 1 1 Oxford University Press Copyright © 1960, The Mineralogical Society 1960