TERMIUM Plus®

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(NA CA CE)2(NB TA TI)2O6(OH F) [1 record]

Record 1 2012-04-19

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
(Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F)
formula, see observation
(Na,Ca)2Nb2O6(OH,F)
formula, see observation
DEF

A pale-yellow, reddish, brown, or black isometric mineral which consists of an oxide of calcium, sodium, niobium, and tantalum; an ore of niobium.

OBS

Chemical formulas: (Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F) or (Na,Ca)2Nb2O6(OH,F)

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
(Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F)
formula, see observation
(Na,Ca)2Nb2O6(OH,F)
formula, see observation
DEF

Minéral (oxyde) du système cristallin cubique, se présentant en cristaux octaédriques ou en masses irrégulières, brunâtre à noir, en particulier dans les pegmatites granitiques et dans les carbonates.

OBS

pyrochlore [...] : Étymologie : du grec pûros, «feu», et khlôpos, «jaune verdâtre», car le pyrochlore devient jaune quand on le chauffe.

OBS

Formules chimiques : (Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F) ou (Na,Ca)2Nb2O6(OH,F)

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
(Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F)
formula, see observation
(Na,Ca)2Nb2O6(OH,F)
formula, see observation
OBS

Fórmulas químicas: (Na,Ca,Ce)2(Nb,Ta,Ti)2O6(OH,F) o (Na,Ca)2Nb2O6(OH,F)

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