Documents The primary acid-generating process at these sites is the dissolution of pyrite: 2FeS 2 + 7O 2 + 2H....

The primary acid-generating process at these sites is the dissolution of pyrite: 2FeS2 + 7O2 + 2H2O > 2FeSO4 + 2H2SO4 Iron and/or sulfur oxidizing bacteria (e.g. Thiobacilli),…