Fig. 3 Calculated pIAP_calcite [= -log (Ca²⁺)(CO^2-₃)] in dolomite-seeded against control unseeded Ca–Mg–HCO₃/CO₃ solutions with 1:1, 2:1, and 4:1 Mg/Ca at 7, 14, 28, 56, 112, 224, 448, and 672 d. Dashed line indicates no difference between seeded and unseeded control