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AMPHIBOLITE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-05-31

English

Subject field(s)
  • Petrography
DEF

A usually metamorphic rock consisting essentially of amphibole.

French

Domaine(s)
  • Pétrographie
CONT

L'amphibolite est essentiellement formée d'amphibole verdâtre et, le plus souvent, d'un feldspath plagioclase blanc ou gris, disposés ou non en lits alternants; d'autres minéraux foncés s'y ajoutent parfois. La teinte d'ensemble varie du vert pâle au vert noisette.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca metamórfica, dura, de color verde oscuro de estructura generalmente esquistosa.

OBS

Las más de las veces (ortoanfibolitas) son rocas eruptivas metamorfizadas a base de hornblenda y de plagioclasa; en otros casos (paraanfibolitas) tienen por origen rocas sedimentarias de naturaleza margosa.

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