gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.135 Adam-Gibbs Theory and the Prediction of Glass Transition Temperatures: The Join Na₂Si₂O₅-NaAlSi₂O₆ Toplis M. J. CRPG-CNRS, Vandoeuvre-lès-Nancy, F-54501, France 1998 62A 3 1527 1528 Copyright © 1998, The Mineralogical Society 1998