TERMIUM Plus®

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

(K NA)ALSI3O8 [1 record]

Record 1 2016-02-09

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
(K,Na)AlSi3O8
formula, see observation
DEF

A high-temperature mineral of the alkali feldspar group ...

OBS

[Sanidine] is a highly disordered, monoclinic form, occurring in clear, glassy, often tabular crystals embedded in unaltered acid volcanic rocks such as trachyte; it appears to be stable under equilibrium conditions above approximately 500°C. Sanidine forms a complete solid-solution series with high albite, and some sodium is always present.

OBS

Chemical formula: (K,Na)AlSi3O8

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
(K,Na)AlSi3O8
formula, see observation
DEF

Variété de feldspath orthose, formée à une température élevée, que l'on trouve dans les roches volcaniques, monoclinique.

CONT

Dans les roches volcaniques récentes, on trouve la sanidine, orthose craquelée, déformée, transparente, à l'éclat vitreux, voisin de celui du quartz.

OBS

Formule chimique : (K,Na)AlSi3O8

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
(K,Na)AlSi3O8
formula, see observation
DEF

Variedad de ortosa vítrea, agrietada superficialmente [...]

OBS

[La sanidina] se encuentra en ciertas rocas volcánicas relativamente recientes.

OBS

Fórmula química: (K,Na)AlSi3O8

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