TERMIUM Plus®

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DIAGRAMME A'KF [2 records]

Record 1 2003-12-11

English

Subject field(s)
  • Petrography
  • Statistical Graphs and Diagrams
DEF

A triangular diagram showing the chemical character of a metamorphic rock in which the three components plotted are A = Al2O3 + Fe2O3 + (CaO + Na2O, K = K2O, and F = FeO + MgO + MnO.

French

Domaine(s)
  • Pétrographie
  • Diagrammes et graphiques (Statistique)
CONT

Pour les roches magmatiques, les roches métamorphiques, et leurs minéraux, on utilise communément :[...] le diagramme A’KF avec ;A’=(Al2O3 + Fe2O2-(Na2O+ K2O + CaO’), où CaO’ représente le calcium lié aux silicates; K=K2O; F=MgO + MnO + FeO.

CONT

Dans le diagramme A’.F.K., le sommet A’ représente la fraction alumineuse qui n’est liée ni à Na-K ni au calcium des silicates (CaO’) alors que le sommet K est K2O et qu’en F restent les ferromagnésiens.

Spanish

Save record 1

Record 2 2003-07-22

English

Subject field(s)
  • Petrography
DEF

A triangular diagram showing the simplified compositional character of metamorphic rocks and minerals by plotting the ... molecular quantities of the three components: A = A2O3 - (Na2O + K2O); C=CaO - 3.3 P2O5; and F = FeO + MgO + MnO.A+C+F (in mols) are recalculated to 100% ...

French

Domaine(s)
  • Pétrographie
CONT

Pour les roches magmatiques, les roches métamorphiques, et leurs minéraux, on utilise communément : le diagramme ACF [...] le diagramme A’KF [...] le diagramme AFM [...]

Spanish

Save record 2

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