TERMIUM Plus®

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

TURMALINE [1 record]

Record 1 2016-02-12

English

Subject field(s)
  • Mineralogy
  • Gemmology
DEF

A complex silicoborate with a vitreous lustre ...

OBS

[It is] usually black or blackish and opaque (schorl), but also blue (indicolite), red (rubellite), green, or colourless ..., known as precious tourmaline, and much used as a gem.

French

Domaine(s)
  • Minéralogie
  • Gemmologie
DEF

Borosilicate d'aluminium contenant du fluor, avec en outre du fer, du manganèse, du magnésium, du lithium, et qui cristallise dans le système rhomboédrique.

CONT

Cyclosilicates. [...] Les tourmalines sont des minéraux caractéristiques des pegmatites, roches des coupoles de granite et surtout de leurs apophyses. Les cristaux sont souvent énormes, colorés, à faces courbes [...]

OBS

La tourmaline fait partie des pierres fines.

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Estudio de las gemas
DEF

Silicato complejo [que] cristaliza en el sistema romboédrico y se encuentra en forma de cristales alargados, de sección triangular, diversamente coloreados, según su composición, o bien incoloros.

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