This is the first of a series of five papers in which the thermodynamic properties of minerals are interpreted in terms of lattice vibrational spectra. In this paper, measured heat capacities for minerals are examined in terms of the Debye theory of lattice vibrations, and it is demonstrated that heat capacities of silicates show large deviations from the behavior expected from Debye theory. Th...

Abdelmoula, M., see Refait et al., 731 Advocat, T., see Lecturq et al., 871 Akizuki, M., Kuribayashi, T., Nagase, T., and Kitakaze, A.: Triclinic liddicoatite and elbaite in growth sectors of tourmaline from Madagascar, 364 Alapieti, T.T., see Latypov et al., 547 Alba, M.D., Becerro, A.I., Castro, M.A., and Perdigón, A.C.: Hydrothermal reactivity of Lu-saturated smectites: Part I. A long-range ...

Abstract All available volume and elasticity data for the garnet end-members grossular, pyrope, almandine spessartine have been re-evaluated both internal consistency with experimentally measured heat capacities. The consistent were then used to determine parameters of third-order Birch–Murnaghan EoS describe isothermal compression at 298 K a Mie–Grüneisen–Debye thermal-pressure PVT behaviour. ...

The pegmatites of the São João del Rei Pegmatitic Province are related to Siderian protoliths Cassiterita and Resende Costa orthogneisses Ritápolis metagranitoid Ryacian age. Chemical analysis garnet from twelve reveal two different types grains, which were found in same pegmatitic body six these samples. One type has almandine-spessartine composition (Sps11-7-58.8 Alm36.8-86.5 Prp0.1-4.1Grs0.0...