Thermophysical properties of the garnet , grossular : CajAlrSisO 12 a EDGAR
نویسنده
چکیده
The heat capacity of a gemquality mineralogical sample of grossular: CasAlnSisOls has been determined by equilibrium adiabatic-shield calorimetry from 5 through 600 K and adjusted to the stoichiometric terminal-component grossular by a new entropy-adjustment scheme delineated in the paper. At 298.15 K the observed values of C,, S”, {H”(T)W(O)}/T, and {G”(T)-W(O)}/T are 79.00, 61.61, 37.92, and 23.69 calth K-’ mol-I. The entropy adjusted to terminal component grossular is 60.88 calt, K-l mol-l. The results are combined with higher-temperature differential-scanning calorimetric values of Perkins et al. and of Robie et al. to provide thermodynamic values over greatly extended ranges of temperature.
منابع مشابه
Low-temperature heat capacities of synthetic pyrope,
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