Calculation of density in a ternary system with a limited homogenous region using a geometric model

A recently proposed geometric model is applied to a ternary system with limited homogenous region to calculate the density property. Two ternary systems of SiO2-CaO-Al2O3 and BaO-FeO-Fe2O3 are chosen to demonstrate that the geometric model can use limited experimental information to calculate the density within the homogenous phase region and the calculated results agree well with experimental data.