TERMIUM Plus®

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SODIUM-CALCIUM FELDSPAR [1 record]

Record 1 2005-07-11

English

Subject field(s)
  • Mineralogy
DEF

A group of triclinic feldspars [which] at high temperatures ... forms a complete ... series from Ab [albite] ... to An [anorthite] ...

CONT

Plagioclase feldspars range in composition from pure albite ... to anorthite ...

OBS

According to the source GARGE (Glossary of Geology), the terms "soda-lime feldspar" and "lime-soda feldspar" are misnomers for "sodium-calcium feldspar."

French

Domaine(s)
  • Minéralogie
DEF

[...] série isomorphe complète allant de l'albite à l'anorthite.

CONT

Les feldspaths calciques et sodiques peuvent s'associer en toutes proportions en donnant la série continue des feldspaths plagioclases, de l'albite [...] à l'anorthite [...], dits encore calcosodiques.

CONT

Les plagioclases comprennent plusieurs espèces se différenciant entre elles par la nature et la proportion des bases dominantes, et par la quantité de silice. On peut citer parmi ces minéraux : albite, andésine, anorthite, labradorite et oligoclase.

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Roca formada por silicato, feldespato de sodio y calcio.

CONT

Las numerosas variedades de feldespato pueden ser clasificadas en dos grupos: el de los feldespatos potásicos y el de las plagioclasas o feldespatos calcosódicos. [...] Entre las plagioclasas se destacan la albita [...] y la anortita [...]

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