Fig. 6 Dissolution of dolomite in undersaturated Ca–Mg–HCO3–CO3 solutions with 1:1 Mg/Ca and in deionized water: (a) Change in Ca2+ over values in control unseeded solutions against change in Mg2+ concentrations over values in control unseeded solutions ({Delta}Ca2+ and {Delta}Mg2+, respectively). (b) Change in the sum of Ca2+ and Mg2+ concentrations over values in control unseeded solutions({Delta}Ca2+ + {Delta}Mg2+) against change in alkalinity over values in control unseeded solutions ({Delta}Alk)