Halite: $\text{NaCl}={\text{Na}}^{+}+{\text{Cl}}^{-}$ (1)

Sylvite: $\text{KCl}={\text{K}}^{+}+{\text{Cl}}^{-}$ (2)

Gypsum: ${\text{CaSO}}_4={\text{Ca}}^{2+}+{\text{SO}}_4^{2-}$ (3)

Calcite: ${\text{CaCO}}_{\text{3}}+{\text{CO}}_2+{\text{HO}}_2\text{O}={\text{Ca}}^{2+}+2{\text{HCO}}_3^{-}$ (4)

Dolomite: ${\text{CaMgCO}}_3+{\text{CO}}_2+{\text{H}}_2\text{O}={\text{Ca}}^{2+}+{\text{Mg}}^{2+}+4{\text{HCO}}_3^{-}$ (5)