TERMIUM Plus®

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EUHEDRAL CRYSTAL [1 record]

Record 1 2005-04-14

English

Subject field(s)
  • Mineralogy
DEF

An individual crystal that has grown without restraint so that the habit planes are clearly developed.

CONT

Early micas grow as well-formed ("euhedral") crystals floating in magma.

CONT

The core zone consists mainly of quartz, either as solid masses or as euhedral crystals.

French

Domaine(s)
  • Minéralogie
DEF

Cristal limité par des faces cristallines nettes.

CONT

Un cristal automorphe - on dit aussi idiomorphe (avec ses formes propres) est en principe antérieur à ceux, xénomorphes - on dit aussi allotriomorphes (à formes «étrangères») qui l'enveloppent [...]

CONT

Les minéraux [...] qui tendent à prendre leur forme cristalline habituelle (cristaux idiomorphes ou automorphes) le font suivant les faces parallèles aux plans de clivage facile [...]

CONT

La zone centrale se compose principalement de quartz sous forme d'amas solides ou de cristaux automorphes.

OBS

Par opposition à «cristal xénomorphe» ou «cristal allotriomorphe».

Spanish

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