ABC Model Equilibrium Diagram with Reaction Curve. Ternary phase diagram for melting the hypothetical system A-B-C at 0.1 MPa pressure. Temperature is in degrees Celcius and composition is in weight pecent. Congruent melting temperatures of the three minerals A, B, and C are shown. Mineral D melts incongruently. Temperatures of the three binary eutectics and the one binary peritectic are shown. The liquidus (saturation) surfaces for each mineral are shown by temperature contours. Drag the temperature slider on the right to show isothermal sections through the diagram. Once the slider is selected, you may use up and down arrow buttons to have more control over the speed of temperature change. Click on the "Coordinates" button to see the compositions of points in the diagram as the mouse is moved over the diagram. Click on the "Show Phases" button to see the equilibrium phase assemblages of points in the diagram as the mouse is moved over the diagram. Click on the diagram to hold a particular bulk composition. To see how the phase assemblage changes for the selected bulk composition (shown by a white circle), click on the "Change T" button and use the temperature slider. To cancel the selected bulk composition, click on the "Animate" button.
