TERMIUM Plus®

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

ALLANITE [1 record]

Record 1 2011-06-03

English

Subject field(s)
  • Mineralogy
DEF

A monoclinic, cerium-bearing mineral of the epidote group: (Ce,Ca,Y)(Al,Fe)3(SiO4)3(OH) [which] is typically an accessory mineral in igneous rocks (granite, syenite, diorite, pegmatite) and in their metamorphic equivalents.

CONT

Uraninite is the only primary uranium mineral. It is disseminated through the rocks as ovoid grains which have their greatest concentration in allanite and stillwellite.

OBS

allanite: Named after T. Allan who discovered the mineral.

French

Domaine(s)
  • Minéralogie
DEF

Silicate naturel de composition chimique complexe et de symétrie monoclinique, contenant, avec de l'aluminium, du fer, du magnésium, du calcium, du cérium, du lanthane, du néodyme, du praséodyme.

CONT

Épidotes. Ce sont des éléments d'altération de bien des éléments de roches. [...] Elles sont généralement monocliniques. On distingue plusieurs variétés : la pistacite, [...] le thulite, l'allanite.

OBS

Étymologie : dédiée à T. Allan, minéralogiste écossais qui découvrit l'espèce. Orthite vient du grec orthos, «droit» (pour la forme des cristaux).

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Silicato hidratado muy complejo, puesto que contiene aluminio, hierro, magnesio, calcio, cerio, lantano y sodio, y a veces itrio, erbio y didimio; cristaliza en el sistema monoclínico.

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