TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

GEODE [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-03-07

English

Subject field(s)
  • Geology
  • Metals Mining
DEF

A small cavity in a vein or in rock, which may be lined with well formed crystals of a different mineral composition from the enclosing rock.

CONT

The vugs are commonly almond-shaped and range in size from 10 cm. down to microscopic dimensions.

CONT

Breccia ores are developed along fault zones and are composed of broken bedded ore fragments less than a centimetre to several metres in size cemented by sandy material and contain vugs filled with colloform secondary iron and manganese oxide minerals or quartz.

OBS

bug hole: A miner’s term for vug.

OBS

Compare to "druse, ""miarolitic cavity, "and "geode. "

French

Domaine(s)
  • Géologie
  • Mines métalliques
DEF

Cavité à l'intérieur d'une roche, pouvant être tapissée de minéraux.

CONT

L'imprégnation de laves - dans des vacuoles - représente un remplissage de ces vacuoles; exemple : cuivre natif et zéolites au Lac Supérieur [...]

CONT

Les vacuoles sont [...] emplies par les minéraux variés (silice, calcite, et parfois zéolites).

CONT

[...] le cuivre [...] se concentre secondairement dans les vacuoles lors d'une phase d'altération hydrothermale.

Spanish

Campo(s) temático(s)
  • Geología
  • Minas metálicas
Save record 1

Record 2 2012-02-21

English

Subject field(s)
  • Mineralogy
  • Geology
DEF

A hollow, rounded or subrounded body, which has a lining of mineral crystals pointing inward ...

CONT

A geode is a rock whose crystal-filled interior can be hollow or filled. The crystals that form within the mineral crust of the geode is called cruze. From the outside, geodes look like rounded, but otherwise ordinary rocks.

OBS

Distinguished from vugs which are residual or solution cavities in veins or rocks, and may be crystal-lined.

OBS

Unlike a "druse, "a geode is separable(by weathering) as a discrete nodule or concretion from the rock in which it occurs and its inner crystals are not of the same minerals as those of the enclosing rock. A geode tends to be slightly flattened with its equatorial plane parallel to the bedding.

French

Domaine(s)
  • Minéralogie
  • Géologie
DEF

Masse pierreuse sphérique ou ovoïde, creuse, dont l'intérieur est tapissé de cristaux.

CONT

[...] «des géodes», subsphériques, dont l'intérieur est creux et présente parfois des cristaux bien développés tels les géodes calcaires des «Terres Noires» jurassiques dont la cavité est souvent hérissée de cristaux limpides de quartz pyramidé [...]

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Geología
DEF

Masa mineral hueca cuyas paredes internas están recubiertas por cristales.

Save record 2

Record 3 2005-01-05

English

Subject field(s)
  • Geology
  • Mineralogy
DEF

An irregular cavity or opening in a vein or rock, having its interior surface or walls lined (encrusted) with small projecting crystals usually of the same minerals as those of the enclosing rock, and sometimes filled with water ...

OBS

druse: [term used] particularly if it is a rather small cavity.

OBS

Compare to "vacuole, ""vug, ""geode, "and "miarolitic cavity. "

French

Domaine(s)
  • Géologie
  • Minéralogie
CONT

Les minéraux naissent parfois dans des fentes ou des cavités de roches anciennement formées. Si la cavité a une forme à peu près plane et longiligne, les cristaux s'y développent en couche rectiligne et on appelle cela une druse.

CONT

C'est ainsi que, dans les cavités ou «druses» de certaines roches, on voit les minéraux qui s'y sont déposés se disposer à partir de la paroi en semblant converger vers le centre de la druse.

CONT

Le quartz cristallin se trouve dans les poches à cristaux.

OBS

four à cristaux : nom vulgaire de cavités tapissées de cristal de roche que l'on rencontre dans les parties les plus escarpées des montagnes granitiques des Alpes.

Spanish

Campo(s) temático(s)
  • Geología
  • Mineralogía
DEF

Cavidad de una roca, revestida interiormente por minerales cristalizados.

Save record 3

Record 4 1992-10-14

English

Subject field(s)
  • Spacecraft
  • Research Experiments in Space

French

Domaine(s)
  • Engins spatiaux
  • Travaux de recherche dans l'espace
OBS

Au moyen d'une fusée-sonde suédoise.

Spanish

Save record 4

Record 5 1992-09-16

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A lesion at the end of a long bone which appears to be confined to the subchondral area. These lesions are thought to arise from ingrowth of synovial membrane, but a connection between the marrow cavity and the surface of the bone is not apparent radiologically. Cysts may also occur in the shaft of a phalanx.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Formation pseudo-kystique située au niveau de l'os sous-chondral, faite de tissu conjonctif vasculaire non minéralisé qui a pris la place de l'os spongieux.

Spanish

Save record 5

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