TERMIUM Plus®

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ANDALOUSITE [1 record]

Record 1 2011-07-21

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Al2SiO5
formula, see observation
DEF

A brown, yellow, green, red, or gray orthorhombic mineral [which] is trimorphous with kyanite and sillimanite.

CONT

Andalusite occurs in thick, nearly square prisms in schists, gneisses, and hornfelses; it forms at medium temperatures and pressures of a regionally metamorphosed sequence and is characteristic of contact-metamorphosed argillaceous rocks.

OBS

Chemical formula: Al2SiO5

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Al2SiO5
formula, see observation
DEF

Minéral du système orthorhombique constitué d'un nésosilicate d'alumine, se présentant en cristaux gris clair ou rosés.

CONT

L'andalousite s'altère difficilement et est fréquente dans les roches très métamorphisées. Ainsi au contact d'un granite, un schiste peut contenir ce type d'aluminosilicate.

OBS

Étymologie : d'Andalousie (Espagne).

OBS

Formule chimique : Al2SiO5

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
Al2SiO5
formula, see observation
DEF

Una de las tres formas que puede adoptar el silicato anhidro de aluminio [...], propio de las rocas aluminíferas y arcillosas que han sido metamorfizadas al contacto con magmas de fusión.

OBS

Fórmula química: Al2SiO5

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