TERMIUM Plus®

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ALBITE ALTERATION [1 record]

Record 1 2005-06-06

English

Subject field(s)
  • Geochemistry
  • Erosion and Weathering (Geol.)
DEF

Introduction of, or replacement by, albite, usually replacing a more calcic plagioclase.

CONT

Albitization ... may result from the introduction of sodium or from removal of calcium from plagioclase-bearing rocks. Albitization is found adjacent to some gold deposits, often replacing potash feldspar ...

CONT

In the case of peralkaline systems, greisenization is rare and alteration is dominated instead by albitization (sodium metasomatism).

French

Domaine(s)
  • Géochimie
  • Érosion et corrosion (Géologie)
DEF

Substitution d'un feldspath très sodique, l'albite, à des feldspaths calco-sodiques, par stockage momentané et action du sodium.

CONT

[...] carbonatisation et albitisation dans les shales noirs au contact des filons de calcite; [...]

CONT

Dans le cas des systèmes hyperalcalins, la greisenification est rare et l'altération est plutôt caractérisée par une albitisation (métasomatisme sodique).

Spanish

Campo(s) temático(s)
  • Geoquímica
  • Erosión y corrosión (Geología)
DEF

Transformación al cabo de la cual un feldespato queda convertido en albita.

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