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POIKILITIC [8 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

Save record 1

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

Save record 2

Record 3 2012-01-11

English

Subject field(s)
  • Mineralogy
CONT

If large grains of one mineral enclose many small grains of another mineral, the assemblage may be called poikilitic; the term distinctly implies a magmatic rock...

OBS

poecilitic : original spelling of poikilitic.

OBS

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

French

Domaine(s)
  • Minéralogie
DEF

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

CONT

[...] si de grands grains d'un minéral contiennent de nombreux petits grains d'un autre minéral, l'assemblage peut être dit poecilitique; le terme implique nettement une origine magmatique; [...]

OBS

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

Spanish

Save record 3

Record 4 2006-11-15

English

Subject field(s)
  • Petrography
CONT

Leucocratic tonalite-Forms local elongate masses of white rock composed of plagioclase... and quartz; appear to be very large-scale schlieren. Leucocratic tonalite texturally similar to tonalite forming main part of Lakeview Mountains pluton, except for absence of mafic minerals and slightly smaller grain-size. Extremely poikilitic biotite and hornblende locally present in very small amounts. Rare interstitial white mica found in some plagioclase.

OBS

leucocratic tonalite: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
OBS

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

Spanish

Save record 4

Record 5 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 6 1999-09-16

English

Subject field(s)
  • Petrography
  • Mineralogy
DEF

The rock texture produced by the intergrowth of two different minerals.

OBS

Pegmatitic, granophyric, poikilitic, ophitic, and basiophitic textures are included under this term.

French

Domaine(s)
  • Pétrographie
  • Minéralogie

Spanish

Save record 6

Record 7 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 7

Record 8 1997-12-12

English

Subject field(s)
  • Petrography
  • Mineralogy
DEF

Pelitic hornfels containing cordierite with quartz, feldspar(potassic and plagioclase), mica(biotite), graphite, and andalusite; cordierite forms highly poikilitic porphyroblasts that may show sector twinning.

French

Domaine(s)
  • Pétrographie
  • Minéralogie
CONT

[...] les roches métamorphiques silicatées à texture isotrope sont appelées cornéennes et [...] distinguées les unes des autres à l'aide d'un nom de minéral : cornéenne à cordiérite, à sillimanite, etc.

Spanish

Save record 8

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