High-low quartz inversion: Thermodynamics of the lambda transition

Data for the volume, specific heat, thermal expansion, and elastic moduli of quartz near the high-low inversion are compared, and a preferred set is obtained for discussion of the thermodynamics of the lambda transition. Previous discussions involving the Pippard relations and the relations and results of Garland are critically reviewed and quantitatively extended. Garland's relations appear to be a suitable framework for correlating available data; suggestions are made for the smoothing and testing of future data.