TERMIUM Plus®

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NORME RITTMANN [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1989-03-28

English

Subject field(s)
  • Petrography
  • Mineralogy
DEF

A norm calculated after the manner of the Niggli molecular norm but in which greater variability is introduced into the composition of the minerals in order to bring the resulting mineral percentages into closer agreement with the mode of rock.

French

Domaine(s)
  • Pétrographie
  • Minéralogie

Spanish

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