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CARBONATE ALTERATION [1 record]

Record 1 2009-03-04

English

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

A process of chemical weathering by which minerals that contain lime, soda, potash, or other basic oxides are converted to carbonates by the action of carbonic acid in water or air.

CONT

Carbonatization is common around veins, forms the large "envelopes" or zones, and typically involves the progressive replacement of Ca-, Fe-, and/or Mg-bearing minerals ... in the host rocks by various carbonate minerals.

CONT

Hematitization, epidotization, carbonatization, and soda metasomatism of the host rocks are common primary alteration features of the deposits.

French

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

Processus d'altération chimique selon lequel les minéraux qui contiennent des oxydes basiques sont changés en carbonates par l'action de l'acide carbonique de l'eau ou de l'air.

CONT

L'hématitisation, l'épidotisation, la carbonatation et le métasomatisme sodique des roches hôtes sont des types courants d'altération primaire des gîtes.

OBS

carbonatisation : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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

Acumulación de carbonatos de calcio y magnesio en los horizontes inferiores del suelo.

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