Table 3: Dissolution equations of minerals used in this study.

Dissolution equations
(25°C)

AlbiteNaAlSi3O8 + 4H+ = Al3+ + Na + H2O + 3SiO2
AnorthiteCaAl2(SiO4)2 + 8H+ = Ca2+ + 2Al3+ + 2SiO2 + 4H2O
Clinochlore-14AMg5Al2Si3O10(OH)8 + 16H+ = 2Al3+ + 3SiO2 + 5Mg2+ + 12H2O
Daphnite-14AFe5AlAlSi3O10(OH)8 + 16H+ = 2Al3+ + 3SiO2 + 5Fe2+ + 12H2O
IlliteK0.6Mg0.25Al1.8Al0.5Si3.5O10(OH)2 + 8H+ = 0.25Mg2+ + 0.6K+ + 2.3Al3+ + 3.5SiO2 + 5H2O
KaoliniteAl2Si2O5(OH)4 + 6H+ = 2Al3+ + 2SiO2 + 5H2O
K-feldsparKAlSi3O8 + 4H+ = Al3+ + K+ + 2H2O + 3SiO2
Montmorillonite-MgMg.495Al1.67Si4O10(OH)2 + 6H+ = 0.495Mg2+ + 1.67Al3+ + 4H2O + 4SiO2
PyriteFeS2 + H2O = 0.25H+ + 0.25 + Fe2+ + 1.75HS-
QuartzSiO2 = SiO2