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Glossary of Mining Terms: E-K
- Epithermal
- A hydrothermal ore deposit formed at lower temperatures (50-200oC) and depths (<1km)
- Fault
- A fracture in a rock along which there has been relative displacement
- Feasibility Study
- A detailed study of the economics of a project based on technical calculations and specific mine designs undertaken to a sufficiently high degree of confidence to justify a decision a construction
- Fire Assay
- Assaying method commonly used for the determination of precious metal content
- Flotation
- A mineral processing method used to concentrate the economic minerals from the ore prior to further processing
- Footwall
- The underlying side of a fault, ore body or mine working
- FSU
- Former Soviet Union
- g
- Gram
- Geotechnics
- Branch of engineering tasked with determining the factors influencing the stability of excavations such as pit slopes and stopes
- Grade
- The quantity of ore or metal in a specified quantity of rock
- g/t
- Unit of grade for precious metals: grams per tonne (parts per million)
- Hanging Wall
- The overlying side of a fault, orebody or mine working
- HDPE
- High Density Poly Ethylene
- Hydrogeology
- Branch of geology associated with the study of underground water
- Hydrothermal
- The name given to geological processes associated with heated or superheated water
- INCO process
- A process used to detoxify tailings prior to their disposal
- Indicated mineral resource
- That part of a mineral resource for which tonnage, densities, shape, physical characteristics, grade and mineral content can be estimated with a reasonable level of confidence. It is based on exploration, sampling and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes. The locations are too widely or inappropriately spaced to confirm geological and/or grade continuity but are spaced closely enough for continuity to be assumed
- Inferred mineral resource
- That part of a mineral resource for which tonnage, grade and mineral content can be estimated with a low level of confidence. It is inferred from geological evidence and assumed but not verified geological and/or grade continuity. It is based on information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes which may be limited or of uncertain quality and reliability
- Intrusion
- Body of igneous rock that invades older rocks
- Jackhammer
- A hand held drill used for drilling holes for explosives in underground mining
- JORC code
- Australasian code for reporting of Mineral Resources and Ore Reserves produced by the Joint Ore Reserves Committee
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