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SUB-MARGINAL ORE GRADE [1 record]

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Record 1 2003-10-10

English

Subject field(s)
  • Metals Mining
  • Economic Geology
OBS

The tenor of the lowest grade material that can be mined economically in that particular deposit is called the cut-off point. Ore whose grade is just at the cut-off point or slightly better is called marginal ore, and material that is slightly below the cut-off point is called sub-marginal material. An improvement in price or operating costs will sometimes cause sub-marginal material to become ore.

Key term(s)
  • submarginal ore grade

French

Domaine(s)
  • Mines métalliques
  • Géologie économique
DEF

Teneur qui se situe sans la teneur limite d'exploitabilité du minerai.

OBS

D'après W.A. Visser (ed.), Geological nomenclature, Royal Geological and Mining Society of the Netherlands (source VISGE, 1980, p. 312) l'équivalent français de «submarginal» est «submarginal».

Spanish

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