TERMIUM Plus®

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

ALLOCHROMATIC [1 record]

Record 1 2011-05-17

English

Subject field(s)
  • Mineralogy
DEF

Said of a mineral that, in its purest state, is colorless, but that has color due to submicroscopic inclusions, or to the presence of a closely related element that has become part of the chemical structure of the mineral.

French

Domaine(s)
  • Minéralogie
DEF

Qualifie un minéral dont la couleur résulte de l'inclusion de substances d'origine étrangère.

CONT

Les feldspaths [...] sont [...] des minéraux typiquement allochromatiques, qui prennent diverses colorations (jaune, brun, rougeâtre, vert, noir, gris) en raison des différentes impuretés qu'ils renferment [...]

OBS

Par opposition à «idiochromatique».

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Dícese de los minerales cuyos colores no dependen ni de su estructura cristalina ni de su composición química, sino de la presencia de impurezas en proporciones tan ínfimas que hasta pueden escapar a los métodos ordinarios de análisis.

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