Table I Compilation of selected inorganic anodic and cathodic reactions potentially involved with the oxidation of pyrite.

FeS₂ + 8 H₂O→Fe²⁺ + 2 SO₄² + 16 H⁺ + 14e^-

O₂ + 4e^- + 4H⁺→2 H₂O

FeS₂ + 3 H₂O→Fe²⁺ + S₂O₃^2- + 6 H⁺ + 6e^-

Fe^{3 +} + 1e^-→Fe²⁺

FeS₂→Fe²⁺ + 1/2 + e^-

FeOOH + 3 H⁺ + e^-→Fe²⁺ + 2 H₂O

FeS₂→Fe²⁺ + 1/4 S₈ + 2e^-

MnO₂ + 4H⁺ + 2e^-→Mn²⁺ + 2 H₂O

FeS₂ + 3 H₂O→Fe²⁺ + 1/2 S₄O₆^2- + 6 H⁺ + 7e^-

FeS₂ + 6 H₂O→Fe²⁺ + 2 + 12 H⁺ + 10e^-

Fe²⁺ → Fe³⁺ + 1e^-

H₂O→OH* + H⁺ + e^-