TERMIUM Plus®

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LYDIENNE [1 record]

Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 2017-05-11

English

Subject field(s)
  • Petrography
DEF

A touchstone consisting of a compact, extremely fine-grained, velvet- or gray-black variety of jasper [which] occurs in chert-like bands in older formations where it may represent a shale, limestone, or tuff that has been silicified ...

OBS

lydite: Obsolete name for Lydian stone.

French

Domaine(s)
  • Pétrographie
DEF

Variété de quartz cryptocristallin ou de shale siliceux (jaspe) de couleur noire [qu'on] utilise pour tester la pureté des métaux précieux.

CONT

Les «silexites», roches compactes, paraissant amorphes à l'œil, finement rubanées, composées de quartz calcédonieux. On peut distinguer, [...] selon la couleur : Les «Lydiennes», colorées en noir par des matières organiques.

Spanish

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