Garnet

Thermodynamic Properties of Garnet Solid Solutions with general formula (Ca,Mg,Fe2+)3Al2Si3O12

  1. Calculate Wt % oxides from mole fractions of endmembers.
  2. Calculate mole fractions of endmembers from Wt % oxides.
  3. Calculate thermodynamic properties from mole fractions of endmembers, T and P.
SiO2 Al2O3 FeO MgO CaO
Wt % oxides:
Almandine
Fe3Al2Si3O12		 Grossular
Ca3Al2Si3O12		 Pyrope
Mg3Al2Si3O12
Mole Fraction:

Calculation of Thermodynamic Properties require specification of temperature (T) and Pressure (P)

Input a temperature (C): .
Input a pressure (bars): .
Action: results or the form.

Berman RG (1990) Mixing properties of Ca-Mg-Fe-Mn garnets American Mineralogist 75, 328-344

Berman RG, Koziol AM (1991) Ternary excess properties of grossular-pyrope-almandine garnet and their influence in geothermobarometry American Mineralogist 76, 1223-1231.