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LABRADOR SPAR [1 record]

Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 2011-08-18

English

Subject field(s)
  • Mineralogy
DEF

A mineral of the feldspar group which consists of an aluminosilicate of calcium and sodium.

OBS

Named after a locality of the Labrador Coast. Not to be confused with the rock labradorite.

French

Domaine(s)
  • Minéralogie
DEF

Feldspath sodi-calcique.

CONT

En toute rigueur, seules les roches les plus profondes méritent l'appellation de gabbros, leurs plagioclases étant des labradors [...] Les minéraux présents dans la masse gabbroïque varient progressivement [...] : les plagioclases évoluent régulièrement depuis le labrador [...] jusqu'à l'oligoclase [...]

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Aluminosilicato de calcio y sodio que cristaliza en el sistema triclínico; sus cristales se encuentran en las andesitas cuarcíferas.

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