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Use the Pitzer equations for calculations at high ionic strength.

Add species to the Basis pane. Use the Pitzer equations for calculations at high ionic strength. . Mineral saturation states calculated using the Debye-Huckel equation for activity coefficients. Field evidence suggests Halite and Anhydrite

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Use the Pitzer equations for calculations at high ionic strength.

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  1. Add species to the Basis pane. Use the Pitzer equations for calculations at high ionic strength.

  2. Mineral saturation states calculated using the Debye-Huckel equation for activity coefficients. Field evidence suggests Halite and Anhydrite are in equilibrium with the fluid, in contrast to calculations.

  3. File → Open → Thermo Data... A thermo dataset utilizing the Pitzer equations, developed for application to high ionic strength systems, may provide more accurate calculation of Mineral saturation in this example.

  4. Select thermo_hmw.dat to calculate activities using the Pitzer equations.

  5. Anhydrite and Halite appear very close to being in equilibrium, unlike results using the Debye-Huckel equation.

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