TERMIUM Plus®

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HOST INTRUSIVE COMPLEX [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2005-01-11

English

Subject field(s)
  • Radioactive Ores (Mining)
DEF

A roll orebody of the Wyoming type, which is bounded on the concave side by oxidized altered rock typically containing hematite or limonite, and on the convex side by relatively reduced altered rock typically containing pyrite and organic matter.

CONT

roll-type uranium ore: C-shaped deposit, most commonly in sandstones, formed by advancing mineralizing fluids. Deposition takes place where groundwaters encounter reducing conditions ...

OBS

Sandstone-uranium-vanadium-base metal deposits. - These deposits are found in terrestrial sediments ... Uranium-rich examples are called Colorado Plateau-type, carnotite-type, sandstone-type, Wyoming roll-front-type ... In deposits of this type one or two metals are present in economic amounts, whilst the others may be present in minor or trace quantities.

OBS

Within carbonatites, deposits are often crescentic or rounded in form, reflecting the distribution of host intrusive phases.... The deposits of this class are commonly groups of lenses or ore shoots of crescentic or annular form showing steep dips related to crystallization parallel to the walls of the intrusive complex, and are notable for great vertical continuity of the ore.

OBS

Orebodies of the Wyoming type are crescent-shaped in cross section and typically form in relatively thick, tabular, or elongate sandstone bodies, with the tips of the crescent thinning and becoming tangent to mudstone layers above and below.

PHR

Roll-front uranium deposit.

French

Domaine(s)
  • Minerais radioactifs (Mines métalliques)
CONT

Au Sud Texas, le gisement uranifère de Panna Maria, de type «roll», se serait formé selon ces processus biogéniques [...]

OBS

Sous-type rolls [...]. - Il est bien représenté au Wyoming. [...] Une des principales caractéristiques du sous-type est le caractère sécant de la minéralisation sur la roche-hôte, les gisements ayant une forme de croissant.

Spanish

Save record 1

Record 2 2003-10-29

English

Subject field(s)
  • Petrography

French

Domaine(s)
  • Pétrographie

Spanish

Save record 2

Record 3 2001-02-27

English

Subject field(s)
  • Petrography
  • Geochemistry
DEF

A coarse-grained, plutonic rock carrying free quartz and alkali feldspar.

CONT

The host rocks of the Thor Lake deposits are the Blachford Lake Complex, a sub-circular series of syenite and alkalic granite with a crude and incompletely developed concentric distribution of intrusive phases.

Key term(s)
  • alkaline granite

French

Domaine(s)
  • Pétrographie
  • Géochimie

Spanish

Campo(s) temático(s)
  • Petrografía
  • Geoquímica
Save record 3

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