Sterile Rock
nounPronunciation: /ˈsterəl rɑk/
Mine waste rock or overburden material confirmed through geochemical testing to contain insufficient sulfide minerals to generate acid mine drainage or release harmful contaminants under predicted environmental conditions. Sterile material can be safely used in reclamation work such as dam construction, cover systems, or general backfilling without creating secondary contamination risks.
Plain English
Mine waste rock that testing confirms will not produce acid or release harmful metals into the environment.
Etymology & History
Usage
"The reclamation engineer classified 60% of the waste pile as sterile rock, allowing its reuse in slope stabilization."
Style guide notes: Always reference supporting geochemical data when claiming rock is sterile; avoid relying on visual assessment alone.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How is sterile rock identified during reclamation planning?
Through static and kinetic geochemical testing to measure acid-generating and neutralizing mineral content thresholds.
Where is sterile rock used in mine reclamation?
As foundation material for structures, in cover systems, for road construction, and as backfill in non-sensitive areas.
Why Test Candidates on This?
Important for efficient reclamation planning and reducing costs through strategic reuse of benign materials.
Required skill level: Mid