ternary diagram
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KAl2Si2O6-CaAl2Si2O8-SiO2 Diagram. Ternary phase diagram for melting the system KAl2Si2O6-CaAl2Si2O8-SiO2 at 0.1 MPa pressure based on data from **refence needed**. Temperature is in degrees Celcius and composition is in weight pecent. The non-ternary spinel MgAl2O4 field has been removed to simplify the diagram. Melting temperatures of the three minerals leucite (Di), anorthite (An), and cristobalite are shown, along with temperatures of three binary eutectic points and one peritectic point. The liquidus (saturation) surfaces for each mineral are shown by temperature contours.