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AMPHIGENE [1 record]

Record 1 2016-02-17

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
KAlSi2O6
formula, see observation
DEF

A white or gray mineral of the feldspathoid group, which consists of a natural aluminosilicate of potassium, commonly found in Vesuvius lavas.

OBS

leucite: named from the Greek word, "leukos," meaning white.

OBS

vesuvian garnet: a misleading term for once a white leucite having an isometric crystal form like garnet.

OBS

Chemical formula: KAlSi2O6

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
KAlSi2O6
formula, see observation
DEF

Minéral du groupe des feldspathoïdes constitué d'aluminosilicate naturel de potassium, courant dans les laves du Vésuve sous forme de trapézoèdres cubiques.

CONT

La leucite [...] n'est stable qu'à basse pression [...] elle ne se rencontre que dans les laves.

CONT

Les feldspathoïdes [sont des] minéraux dont la composition se rapproche des feldspaths. Les principaux sont la néphéline [...] et la leucite [...], courante dans les laves du Vésuve.

OBS

leucite : étymologie: du grec leukos, «blanc»; minéral antérieurement appelé «grenat blanc».

OBS

Formule chimique : KAlSi2O6

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
KAlSi2O6
formula, see observation
DEF

Aluminosilicato de potasio que cristaliza en el sistema cúbico [...]

OBS

[La leucita] se encuentra en las rocas volcánicas en forma de trapezoedros grises de fractura concoide y brillo vítreo.

OBS

Fórmula química: KAlSi2O6

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