TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PORPHYRITIC GRANITE [2 records]

Record 1 2002-01-22

English

Subject field(s)
  • Petrography
DEF

Granite rock with two grain sizes, containing large crystals (phenocrysts) of orthoclase feldspar (reddish) and smaller granite-size grains of quartz (clear) and orthoclase (pink).

French

Domaine(s)
  • Pétrographie
CONT

Le «granite porphyroïde» possède de grands cristaux d'orthose (plusieurs centimètres) parmi des éléments de taille normale (quelques millimètres); on l'appelle encore granite à dents de cheval.

Spanish

Save record 1

Record 2 1978-04-19

English

Subject field(s)
  • Geology
OBS

Granites are not uncommonly porphyritic, the phenocrysts being orthoclase or microcline.

OBS

Other granites are porphyritic, containing large phenocrysts of alkali feldspar, or porphyroblasts of the same formed by metasomatism.

French

Domaine(s)
  • Géologie
OBS

Il s'agit de granite à gros cristaux de feldspath noyés dans une pâte grenue à structure équanite.

Spanish

Save record 2

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