“…The creation and compilation of thermodynamic databases, along with improved computer technology, laid the basis for this development. The databases have been used with geochemical computer codes, such as EQ3/6 (Wolery, 1983(Wolery, , 1992, WATCH (Arnórsson et al, 1982;Bjarnason, 1994), SUPCRT92 (Johnson et al, 1992), PHREEQC (Parkhurst et al, 1980;Parkhurst and Appelo, 1999) and TOUGHREACT (Xu et al, 2006(Xu et al, , 2011, allowing for rapid simulations of mineral solubility and solute speciation in a variety of geochemical systems. The codes differ in complexity and ease of use, but all accurately solve for the equilibrium assemblages of minerals and aqueous species, and mineral solubilities within the limits of their thermodynamic databases.…”