Fig. 2
From: Thermodynamic forward modeling of retrogressive hydration reactions induced by geofluid infiltration
Conceptual schematic of the mass-balance equations, including the non-equilibrium phase (Eq. 1). The first and second terms on the right-hand side of Eq. 1 indicate the compositional and modal changes, respectively, of the equilibrated minerals. The third term on the right-hand side of the equation indicates the modal changes caused by congruent dissolution of non-equilibrated minerals