TERMIUM Plus®

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

CRYSTALLITE [1 record]

Record 1 2016-02-26

English

Subject field(s)
  • Mineralogy
  • Petrography
DEF

A type of microscopic body occurring in such glassy igneous rocks as obsidian and pitchstone.

CONT

Crystallites are regarded as incipient or embryonic crystals, though they often have no recognizable crystallographic form and are too small to polarize light. They occur when magma (molten rock material) congeals so rapidly that crystallization remains incomplete. Crystallites are distinguished from microlites, which are slightly larger forms recognizable as mineral species.

French

Domaine(s)
  • Minéralogie
  • Pétrographie
DEF

Petit cristal (quelques microns) ne réagissant pas à la lumière polarisée et qu'on rencontre dans les roches ignées, comme : globulite, longulite, margarite, trichite et d'autres formes de cristallisation naissantes n'appartenant à aucune espèce minérale définie.

CONT

Les cristallites apparaissent au début de la cristallisation d'un milieu vitreux. On les trouve dans les roches volcaniques sous forme de boules, de colliers de perles, de bâtonnets ou de cheveux.

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Petrografía
DEF

Germen microscópico que marca el comienzo de la cristalización de un mineral, especialmente en las rocas volcánicas.

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