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POIKILITIC TEXTURE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-04-20

English

Subject field(s)
  • Mineralogy
CONT

Garnet occurs as equant anhedral to subhedral porphyroblasts up to 1.5 mm in diameter with poikilitic cores. It generally makes up one to two percent of the rock but can reach up to four percent in the higher-grade rocks near the lower sillimanite zone/upper sillimanite zone isograd.

OBS

poikilitic : Describes a grain texture in which a larger grain includes a number of smaller, disoriented grains.

OBS

poikilitic core: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Minéralogie
OBS

poecilitique : Se dit de la texture d'un grand cristal d'un minéral contenant de nombreux petits cristaux d'un autre minéral.

OBS

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

Spanish

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Record 2 2012-07-26

English

Subject field(s)
  • Petrography
DEF

A coarse, hypidiomorphic-granular variety of nepheline syenite with a poikilitic texture, rich in sodalite, and containing microcline plus lesser amounts of albite, analcime, acmite, and sodium amphibole.

French

Domaine(s)
  • Pétrographie
DEF

Roche à gros grain, formée de cristaux idiomorphes de sodalite englobés en très grand nombre dans de grandes aegyrines poecilitiques, d'arfvedsonite, de feldspath alcalin [ou] d'eudyalite.

Spanish

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Record 3 2004-02-16

English

Subject field(s)
  • Mineralogy
DEF

... texture of an igneous rock in which small grains of one mineral (e.g. plagioclase) are irregularly scattered without common orientation in a typically anhedral larger crystal of another mineral (e.g. pyroxene); ...

OBS

poecilitic: The original spelling of poikilitic. Now obsolete in American usage, it is still the most accepted European spelling.

French

Domaine(s)
  • Minéralogie
DEF

[...] texture d'un grand cristal d'un minéral contenant de nombreux petits cristaux d'un autre minéral.

CONT

Dans la structure poecilitique, les cristaux de pyroxènes sont si grands que chacun d'entre eux forme un noyau qui englobe plusieurs lattes feldspathiques.

Spanish

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Record 4 1999-09-16

English

Subject field(s)
  • Mineralogy
  • Petrography
DEF

Said of a metamorphic texture due to the development, during recrystallization, of a new mineral around numerous relicts of the original minerals, thus simulating the poikilitic texture of igneous rocks.

French

Domaine(s)
  • Minéralogie
  • Pétrographie
DEF

Se dit des roches métamorphiques poecilitiques.

CONT

Les structures «diablastiques» [...] et «poeciloblastiques» (inclusions poecilitiques des particules de la trame dans de grands cristaux) peuvent s'expliquer [...] par adaptation à minimiser les tensions internes [...]

Spanish

Save record 4

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