The American Journal of Science, Band 278

albite analcime andalusite anorthite calcite calorimetric data calorimetric value Clapeyron slope cm³ compositions computed cordierite corresponding corundum curve in figure data reported diopside displacive disorder dolomite energies of formation epidote equation equilibrium constants estimates experimental observations function of temperature Gibbs free energy gibbsite given in table grossular H₂O heat capacity heat capacity coefficients heats of solution Hemingway and Robie Hemley high albite high pressures high sanidine Hovis Jour K-feldspar kaolinite Kelley Kleppa KYANITE low albite microcline minerals molal Gibbs free molal heat capacity muscovite observations of phase order/disorder ordering parameter PARAGONITE phase relations symbols pressures and temperatures PTOTAL pyrophyllite quartz Robie and Waldbaum sanidine shown in figure silicates SiO2(aq solid solution standard molal enthalpy standard molal entropy standard molal Gibbs standard molal heat standard molal volumes TEMPERATURE,°C Fig thermodynamic thermodynamic data given thermodynamic properties transition tremolite uncertainties Univariant equilibrium curves values of AH wairakite Waldbaum wollastonite