gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1966.035.275.19 Book Reviews The Phases of Silica Gay P. 9 1966 35 275 1022 1022 Sosman R. B. The phases of silica New Brunswick Rutgers University Press 1965 x + 388 pp. Price: $10.00 Copyright © 1966, The Mineralogical Society 1966