Melilite


Thermodynamic Properties of Melilite Solid Solutions with general formula Ca2(Mg,Al)(Al,Si)SiO7


  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 MgO CaO
Wt % oxides:
Akermanite
Ca2MgSi2O7
Gehlenite
Ca2Al2SiO7
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.

Charlu TV, Newton RC, Kleppa OJ (1981) Thermochemistry of synthetic Ca2Al2SiO7 (gehlenite) - Ca2MgSi2O7 (akermanite) melilites Geochimica et Cosmochimica Acta 45, 1609-1617
Waldbaum DR (1973) The configurational entropies of Ca2MgSi2O7-Ca2SiAl2O7 melilites and related minerals Contributions to Mineralogy and Petrology 39, 33-54.