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1.
The heat capacities of synthetic pyrope (Mg3Al2Si2O12), grossular (Ca3Al2Si3O12) and a solid solution pyrope60grossular40 (Mg1.8Ca1.2Al2Si3O12) have been measured by adiabatic calorimetry in the temperature range 10–350 K. The samples were crystallized from glasses in a conventional piston-cylinder apparatus.The molar thermophysical properties at 298.15 K (J mol?1 K?1) are:
Cop | So298?So0 | Ho298?Ho0/T | |
Pyrope | 325.31 | 266.27 | 47852 |
Grossular | 333.17 | 260.12 | 47660 |
Py60Gr40 | 328.32 | 268.32 | 47990 |