TERMIUM Plus®

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CHLORITE SCHIST [1 record]

Record 1 2017-05-11

English

Subject field(s)
  • Petrography
DEF

A schist in which the main constituent, chlorite, imparts a schistosity by parallel arrangement of its flakes. Quartz, epidote, magnetite, and garnet are accessories, the last two often as conspicuous porphyroblasts.

CONT

The volcano-sedimentary sequence, the main host to gold-bearing veins, consists of greywacke, chlorite schist, polymictic conglomerate and oxide facies iron formation.

French

Domaine(s)
  • Pétrographie
DEF

Roche métamorphique foliée, riche en chlorite, qui lui donne une couleur verte.

CONT

[...] les chloritoschistes, de coloration vert foncé, présentent d'abondantes paillettes vertes de chlorite bien visibles à l'œil nu, et renferment fréquemment des octaèdres de grenat.

CONT

[...] en Afrique équatoriale, on est frappé par la contiguïté des quartzites ferrugineux avec des chlorito- et amphiboloschistes [...] dérivant de vieilles coulées basiques.

OBS

Ne pas confondre avec «schiste chloriteux» et «schiste chloritique» qui renferment une proportion moindre de chlorite.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca metamórfica [...] constituida esencialmente por pajuelas de clorita que forman esquistos verdosos.

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