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GABBRO-ANORTHOSITE [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-08-16

English

Subject field(s)
  • Petrography
DEF

A light-colored gabbro.

OBS

... leucogabbro(formerly termed gabbro-anorthosite...).

OBS

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

French

Domaine(s)
  • Pétrographie
CONT

Leucogabbros, mélanogabbros. Ce sont des faciès de variation de gabbros classiques, les uns appauvris, les autres enrichis en pyroxène.

OBS

[...] leucogabbro (autrefois appelé «gabbro-anorthosite» [...]

OBS

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

Spanish

Save record 1

Record 2 2011-05-16

English

Subject field(s)
  • Petrography
  • Various Metal Ores
DEF

Heavy, dark, sandlike minerals found on beaches and in stream beds.

CONT

The concentrations of black sand in the delta area of the Natashquan River on the north shore of the St. Lawrence River... are typical examples of heavy mineral placer deposits derived from a gabbro-anorthosite terrane.

OBS

Usually magnetite and ilmenite and sometimes gold, platinum, and monazite are present [in black sand].

PHR

Black sand bed.

French

Domaine(s)
  • Pétrographie
  • Minerais divers (Mines métalliques)
CONT

La plupart des minéraux accessoires du granite (sphène, apatite, grenat, monazite, tourmaline, minerais, etc.) résistent à l'altération et se retrouvent sous forme de «minéraux lourds», concentrés en des lits de «sables noirs» dans les sédiments dérivés du remaniement des arènes.

CONT

[...] lorsqu'on lave des alluvions à la batée, on trouve l'or fréquemment associé à un «sable noir» (magnétite, ilménite ou à un «sable jaune» (grenat, zircon, monazite).

CONT

Les concentrations de sable noir observées dans la région du delta de la rivière Natashquan sur la rive nord du Saint-Laurent [...] sont des exemples typiques de placers de minéraux lourds dérivés d'un terrane gabbro-anorthositique.

PHR

Couche de sable noir.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Minerales varios (Minas metálicas)
DEF

Sedimento arenoso en el que se encuentran muy concentrados uno o varios metales pesados como consecuencia de algún proceso natural.

Save record 2

Record 3 2007-10-23

English

Subject field(s)
  • Petrography
CONT

Jotunites are orthopyroxene-bearing rocks of mainly monzodioritic composition, commonly containing appreciable Fe-Ti oxide and apatite.

OBS

In the past, jotunites have been called gabbro-anorthosite, ferrodiorite, monzodiorite, gabbroic anorthosites, and oxide-apatite-gabbronorites.

OBS

Jotunites are distinguished from minor products of crystallization of anorthosite by their higher concentrations of Ti, Fe, and especially P.

OBS

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

French

Domaine(s)
  • Pétrographie
CONT

Les jotunites sont des roches à orthopyroxène de composition principalement monzodioritique qui contiennent fréquemment des quantités appréciables d'oxydes de Fe-Ti et d'apatite.

OBS

Elle se distinguent des produits mineurs de la cristallisation de l'anorthosite par leurs concentrations plus élevées de Ti, de Fe et tout particulièrement de P.

OBS

Dans le passé, la jotunite a été appelée «gabbro-anorthosite», «ferrodiorite», «monzodiorite», «anorthosite gabbroïque» et «gabbronorite à oxydes-apatite».

OBS

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

Spanish

Save record 3

Record 4 1992-06-03

English

Subject field(s)
  • Petrography
  • Metals Mining
CONT

Titaniferous magnetite deposits... are most commonly developed in the gabbroic phases at the margins of gabbro-anorthosite intrusive stocks and in the gabbro-diorite stocks, dykes and sills associated with major gabbro intrusions.

CONT

Large ilmenite and titaniferous magnetite deposits related to anorthosite and gabbroic anorthosite metallogenes ... occur as irregular masses and disseminations in layered or massive anorthositic and gabbroic intrusions.

CONT

Many small to medium sized magnetite deposits occur in gabbroic intrusions but the really big tonnages occur in the stratiform lopoliths.

French

Domaine(s)
  • Pétrographie
  • Mines métalliques
CONT

Les gîtes [de magnétite] sont en relation spatiale avec les intrusions gabbroïques [...]

CONT

Dans le Bouclier canadien, le titane [...] est associé aux grandes intrusions anorthositiques et gabbroïques qui vont de l'Archéen [...] à l'Hélikien [...]

Spanish

Save record 4

Record 5 1991-03-08

English

Subject field(s)
  • Mineralogy
CONT

The Newboro Lake iron deposit consists of magnetite-rich zones in a dark grey to green ophitic textured layered gabbro-anorthosite intrusion in which distinct banding is developed...

French

Domaine(s)
  • Minéralogie
OBS

Voir fiche "texture ophitique".

Spanish

Save record 5

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