Neutral Mine Drainage
nounPronunciation: /ˈnuːtrəl maɪn ˈdreɪnɪdʒ/
Water discharge from mining operations that maintains a neutral pH (approximately 6-8) but may still contain dissolved metals and contaminants. This condition typically occurs in carbonate-rich geological settings where alkaline minerals naturally buffer acidic reactions.
Plain English
Mine water with neutral pH that can still contain harmful metals and requires monitoring.
Etymology & History
Usage
"The limestone-hosted mine produced neutral mine drainage, but iron concentrations still exceeded regulatory limits."
Style guide notes: Always measure and report actual pH values rather than relying on neutral classification alone.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Can neutral mine drainage be harmful?
Yes, neutral pH alone doesn't prevent metal contamination; treatment may still be necessary.
What geological conditions create neutral drainage?
Carbonate and silicate minerals provide alkalinity that buffers acidic reactions in the mine.
Why Test Candidates on This?
Important for understanding mine water chemistry variation and site-specific treatment needs.
Required skill level: Mid