TERMIUM Plus®

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

CUIVRE LAC SUPERIEUR [3 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 2011-11-02

English

Subject field(s)
  • Copper and Copper Alloys (Metallurgy)
  • The Product (Marketing)
CONT

Partial serpent artifact made of Lake Superior copper found at Effigy Mounds National Monument, Iowa.

OBS

A pure type of copper produced from ores taken from the Lake Superior region.

Key term(s)
  • Lake copper

French

Domaine(s)
  • Cuivre et alliages du cuivre (Métallurgie)
  • Produit (Commercialisation)
CONT

La carte illustre les sources géologiques du cuivre du lac Supérieur et l'emplacement des sites du complexe funéraire adénien dans la partie septentrionale du nord-est de l'Amérique du Nord.

Spanish

Save record 2

Record 3 2005-09-09

English

Subject field(s)
  • Copper Mining
CONT

Kupferschiefer-type deposits occur typically as zonally distributed, disseminated sulphides at oxidation-reduction boundaries in anoxic rocks at the base of a marine or large-scale saline lacustrine transgressive cycle overlying or interbedded with continental redbeds. Redbeds and evaporites are characteristic associated rock types. Copper is the most important metal found in these deposits and silver and cobalt are the most important byproduct or, in a few localities, coproduct metals.

OBS

There appears to be a possible gradation in type and environment from deposits such as the Kupferschiefer, which are dominantly composed of normal sedimentary material and which occur in a non-volcanic sedimentary environment, through deposits such as Sullivan, which are richer in sulphur and may have some minor volcanic formations in their host succession, to the volcanic massive sulphide deposits which are mainly composed of sulphides and occur in host rocks dominated by volcanics.

French

Domaine(s)
  • Mines de cuivre
CONT

Règle générale, les gîtes de type Kupferschiefer sont composés de sulfures disséminés déposés selon une répartition zonale à des fronts d’oxydo-réduction dans des roches situées à la base de cyclothèmes de séquences transgressives déposées dans des conditions anoxiques en milieu marin ou en milieu lacustre salin de grande étendue; les lithologies de ces séquences transgressives surmontent des couches rouges de milieu continental ou sont interstratifiées avec celles-ci. Les couches rouges et les évaporites sont deux des lithologies qui apparaissent associées de manière caractéristique aux séquences minéralisées.

CONT

[...] pour les dépôts stratiformes non plissés à grain fin, du type Kupferschiefer, les forages sont bien adaptés.

OBS

[...] les gisements stratiformes sensu stricto de cuivre et plomb-zinc se situent souvent dans des niveaux sédimentaires renfermant une proportion notable d’argile et, souvent, de minéraux néoformés. Ces concentrations métallifères appartiennent au type «Kupferschiefer», gisements de Cu-Pb-Zn du Permien d’Allemagne-Pologne, de cuivre du Lac supérieur [...], etc.

Spanish

Save record 3

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