Fig. 3.
The Gibbs free energy of mixing as a function of composition. (A) Data at 8,000 K for several pressures: 4 Mbar (red squares), 8 Mbar (green triangles), 10 Mbar (blue inverted triangles) and 12 Mbar (violet diamonds). (B) Data at P = 10 Mbar for several temperatures: 5,000 K (red sqaures), 7,000 K (green triangles), 8,000 K (blue triangles), and 10,000 K (violet inverted triangles). Results of calculations are shown as symbols and error bars; solid lines are guides to the eye only.