PHREEQC 3 can calculate the solubility of typical scale forming minerals like barite, celestite, halite, etc. at high pressures and temperatures. The Pitzer database that is used for calculating the solubilities has been updated, fitting interaction coefficients for the Na-K-Mg-Ca-Ba-Cl-CO2-HCO3-SO4-H4SiO4 system on many experimental data (Appelo, 2015, Appl. Geochem. 55, 62-71). The appendix to the paper contains input files and figures showing experimental solubilities and PHREEQC calculations, as shown here for a few cases.
Barite in NaCl solutions, in Barite_NaCl.phr:
Barite at 500 bar, f(T), in Barite_tc.phr:
Celestite at 25, 100, 200oC, f(P), in SrSO4_P.phr:
Celestite at 200 bar, f(T), in SrSO4_tc.phr:
Halite at 30 °C, f(P), in halite.phr:
