3 reacons related to presence or absence of oxygen o2

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Unformatted text preview: (aq) •  Anhydrite (CaSO4) •  CaSO4 (s) <- > Ca2+ (aq) + SO42- (aq) [email protected] [email protected] Important in mineral weathering •  First – background review of [email protected] and [email protected] (redox) processes (also see Text Box 4.3) [email protected] related to presence or absence of oxygen •  O2 present – oxidizing environment •  O2 not present – reducing environment •  Importance: •  Weathering of minerals deposited in reducing environments •  Alters water ch...
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