Cummingtonite


Thermodynamic Properties of Cummingtonite Solid Solutions with general formula (Mg,Fe)7Si8O22(OH)2


  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 FeO MgO H2O
Wt % oxides:
Cummingtonite
Mg7Si8O22(OH)2
Grunerite
Fe7Si8O22(OH)2
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.

Ghiorso MS, Evans BW, Hirschmann MM, Yang H (1995) Thermodynamics of the Amphiboles: Fe,Mg-cummingtonite solid solutions. American Mineralogist 80, 502-519.