Feldspar

Thermodynamic Properties of Feldspar Solid Solutions with general formula (Ca,Na,K)Al(Al,Si)Si2O8

  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 CaO Na2O K2O
Wt % oxides:
Albite
NaAlSi3O8		 Anorthite
CaAl2Si2O8		 Sanidine
KAlSi3O8
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.

Elkins LT, Grove TL (1990) Ternary feldspar experiments and thermodynamic models. American Mineralogist 75, 544-559