Oxidation Weathering
nounPronunciation: /ˌɒksɪˈdeɪʃən ˈweðərɪŋ/
The chemical alteration of exposed minerals in abandoned mines through oxidation reactions with atmospheric oxygen and water, releasing harmful constituents into soil and water. This process is particularly significant in sulfide-rich mines where iron sulfides oxidize to produce acidity and metal release.
Plain English
Chemical breakdown of minerals in abandoned mines caused by exposure to air and water.
Etymology & History
Usage
"Oxidation weathering of exposed pyrite in the mine walls continued to produce acid mine drainage years after abandonment."
Style guide notes: Specify mineral types and environmental conditions when discussing oxidation weathering mechanisms.
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Contrasted with
Related Terms
Frequently Asked Questions
What minerals oxidize in mines?
Sulfides like pyrite, chalcopyrite, and galena oxidize, releasing iron, copper, lead, and acids.
How can oxidation be slowed?
Reducing oxygen exposure through capping, sealing, water management, and chemical inhibitors slows oxidation rates.
Why Test Candidates on This?
Critical for understanding AMD formation mechanisms and designing preventative reclamation strategies.
Required skill level: Mid