“PEQ” is a QuickBASIC program package for the construction of mineral phase equilibrium diagrams such as P-T, T-X
CO2, P-X
CO2, lnf
O2-T and μ
x-μ
y diagrams using a personal computer. The thermodynamic datasets for minerals of Helgeson
et al. (1978) and Holland and Powell (1990) are incorporated into the program. The non ideal mixing of H
2O and CO
2 can also be taken into account. Some examples of the construction of phase diagrams using “PEQ” are given.
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