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MINED DEPOSIT [12 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2007-01-13

English

Subject field(s)
  • Economic Geology
  • Various Metal Ores
CONT

... the UG2 stratiform chromite deposit of the Bushveld Complex... is mined for platinum group elements...

French

Domaine(s)
  • Géologie économique
  • Minerais divers (Mines métalliques)
CONT

[...] le gisement stratiforme de chromite d'UG2 dans le Complexe du Bushveld, qu'on exploite avant tout pour les éléments du groupe du platine [...]

Spanish

Save record 1

Record 2 2005-12-12

English

Subject field(s)
  • Economic Geology
  • Metals Mining
  • Mineral Processing (Metallurgy)
CONT

Ore grades are somewhat variable. The lowest grade of working deposit in western countries appears to be at Outukumpu(Finnish) mine working 0. 2% Ni ore. This low grade can be compared with the very high grade sections of some Western Australian deposits that run about 12% Ni. Of course, the overall grade for Australian deposits is less than this because lower grade ore is mined with these high grades.

CONT

The dunite pipes contain mineralization that is locally of high grade ...

CONT

The gold zones contained as much as 30% disseminated sulphides, but high gold values appear to have been independent of base metals.

French

Domaine(s)
  • Géologie économique
  • Mines métalliques
  • Minéralurgie (Métallurgie)
CONT

Le fer étant un métal bon marché, le métallurgiste exige des teneurs élevées pour le minerai : 27 à 30 % pour le moins [...]

CONT

[...] une assez forte teneur en manganèse (7 %) rend l'extraction rentable. [...] ce sont des amas énormes de sidérose [...] avec une forte teneur en Mn dans des calcaires et des schistes primaires.

CONT

Les cheminées de dunite sont le siège d'une minéralisation qui présente parfois une forte teneur [...]

Spanish

Save record 2

Record 3 2005-08-11

English

Subject field(s)
  • Economic Geology
  • Mining Operations
CONT

Mexico has found deposits of silver and gold in an area that was supposedly mined out.

CONT

The other veins, which have been mined out, occurred in the footwall of the Bear Bay shear.

PHR

Mined out deposit.

French

Domaine(s)
  • Géologie économique
  • Exploitation minière
CONT

[...] le Mexique a notamment trouvé des gisements d'or et d'argent dans une région que l'on considérait comme épuisée. (Mines métalliques).

CONT

Les autres filons, qui sont maintenant épuisés, se trouvaient dans le mur du cisaillement de Bear Bay.

PHR

Gisement épuisé.

Spanish

Save record 3

Record 4 2005-03-22

English

Subject field(s)
  • Metals Mining
  • Economic Geology
DEF

A mineral deposit consisting of a three-dimensional network of planar to irregular veinlets closely enough spaced that the whole mass can be mined.

CONT

The ore minerals ... are scattered through the host rock either as what is called disseminated mineralization ..., or they are largely or wholly restricted to quartz veinlets which form a ramifying complex called a stockwork ...

CONT

Quartz-molybdenite-scheelite stockworks.

OBS

The term [stockwork] is not generally applied to a small-scale system such as might occur in a brecciated zone. If the veinlets contain an ore mineral it is generally necessary to work the mass as a whole, since the veins are too thin and too closely spaced to be worked individually.

French

Domaine(s)
  • Mines métalliques
  • Géologie économique
DEF

Gisement constitué de petits filons entrecroisés, particulièrement nombreux et rapprochés, [...] le terrain intercalaire est imprégné de minerai, de sorte qu'on exploite toute la masse du gisement.

CONT

Un stockwerk est un faisceau de filonnets très minces et anastomosés dans une roche primitive.

CONT

Lorsque les filons entrecroisés sont particulièrement denses bien que de petites dimensions, on désigne leur ensemble sous le nom de stockwerks, fréquents au voisinage des batholites, et qu'on peut rapprocher des gîtes de ségrégation.

CONT

Stockwerks à quartz-molybdénite-scheelite.

Spanish

Save record 4

Record 5 2004-05-19

English

Subject field(s)
  • Geological and Other Scientific Names
OBS

In southern Australia.

OBS

The Olympic Dam deposit, discovered in 1975, is mined for copper, gold, silver, and uranium. It rivals the largest porphyry copper deposits in terms of contained copper, and forms the largest single resource of uranium in the world.

French

Domaine(s)
  • Noms géologiques ou scientifiques
OBS

Dans le sud de l'Australie.

OBS

Le gisement d'Olympic Dam, découvert en 1975, est exploité pour le cuivre, l'or, l'argent et l'uranium. Il concurrence les plus vastes gisements porphyriques de cuivre du point de vue de la quantité de cuivre contenue et il constitue le plus grand gisement d'uranium du monde.

Spanish

Save record 5

Record 6 2003-10-26

English

Subject field(s)
  • Various Metal Ores
CONT

The Lac Tio deposit near Lac Allard, Quebec... is the only titanium-iron deposit... mined in Canada at present.

French

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

Au Québec, le gisement de Lac Tio, situé à proximité du lac Allard [...] est le seul gisement de titane-fer [...] actuellement exploité au Canada.

Key term(s)
  • gîte de titane-fer

Spanish

Save record 6

Record 7 2003-10-26

English

Subject field(s)
  • Geological and Other Scientific Names
  • Various Metal Ores
OBS

The Lac Tio deposit near Lac Allard, Quebec... is the only titanium-iron deposit... mined in Canada at present. [It] is a flat-lying irregular tabular intrusive mass, 1100 m long and 1000 m wide, which is estimated to contain more than 125 million tonnes of ore averaging 32% TiO2 as ilmenite and 36% FeO.

French

Domaine(s)
  • Noms géologiques ou scientifiques
  • Minerais divers (Mines métalliques)
OBS

Au Québec, le gisement de Lac Tio, situé à proximité du lac Allard [...] est le seul gisement de titane-fer [...] actuellement exploité au Canada. [Il] consiste en une masse intrusive tabulaire de forme irrégulière reposant à l'horizontale, de 1 100 m de longueur sur 1 000 m de largeur qui, selon les estimations, renfermerait plus de 125 Mt de minerai présentant une teneur moyenne en TiO2, sous forme d'ilménite, de 32 % et une teneur en FeO de 36 %.

Spanish

Save record 7

Record 8 2003-10-26

English

Subject field(s)
  • Economic Geology
CONT

The Lac Tio deposit near Lac Allard, Quebec... is the only titanium-iron deposit... mined in Canada at present.

French

Domaine(s)
  • Géologie économique
CONT

Au Québec, le gisement de Lac Tio, situé à proximité du lac Allard [...] est le seul gisement de titane-fer [...] actuellement exploité au Canada.

Spanish

Save record 8

Record 9 2003-10-10

English

Subject field(s)
  • Metals Mining
  • Economic Geology
OBS

The tenor of the lowest grade material that can be mined economically in that particular deposit is called the cut-off point. Ore whose grade is just at the cut-off point or slightly better is called marginal ore, and material that is slightly below the cut-off point is called sub-marginal material. An improvement in price or operating costs will sometimes cause sub-marginal material to become ore.

Key term(s)
  • submarginal ore grade

French

Domaine(s)
  • Mines métalliques
  • Géologie économique
DEF

Teneur qui se situe sans la teneur limite d'exploitabilité du minerai.

OBS

D'après W.A. Visser (ed.), Geological nomenclature, Royal Geological and Mining Society of the Netherlands (source VISGE, 1980, p. 312) l'équivalent français de «submarginal» est «submarginal».

Spanish

Save record 9

Record 10 2003-07-22

English

Subject field(s)
  • Metals Mining
  • Construction of Boreholes (Mining)
  • Geology
DEF

That part of a mineral deposit that can be mined without drilling and shooting.

OBS

It is commonly the upper, weathered portion of the deposit.

French

Domaine(s)
  • Mines métalliques
  • Aménagement du trou de sondage (Mines)
  • Géologie

Spanish

Save record 10

Record 11 2000-07-26

English

Subject field(s)
  • Extraction Procedures - Various (Mining)
DEF

A stoping method in which relatively thin blocks of ore are caused to cave by successively undermining small panels. The ore deposit is developed by a series of sublevels spaced at vertical intervals of 18 to 25 or 30 feet and occasionally more.... The sublevels are developed by connecting the raises with a longitudinal subdrift from which timbered slice drifts are driven right and left opposite the raises to the ore boundaries or to the limits of the block. Usually alternate drifts are driven first, and caving back from them is begun and continued while the intermediate slices are being driven. The caving is begun at the ends of the slices by blasting out cuts and retreating in the same manner toward the raises.... Successively lower sublevels are developed and caved back until the entire block has been mined.

French

Domaine(s)
  • Procédés d'extraction divers (Exploit. minière)
CONT

Le foudroyage par sous-étages. Au mur, parallèlement à l'amas, sont tracées des galeries horizontales [...] reliées par des cheminées au stérile [...]. À partir des horizontales, des recoupes [...] traversent l'amas. [Ensuite] l'ouvrier perce des trous de mine dans les directions horizontales et verticales [...] autour de la galerie [...]. Sur sa tête se trouve un banc de minerai en place, puis un peu de minerai sali par du stérile à l'endroit où se trouvait la galerie du sous-étage supérieur avant abattage, puis le stérile de foudroyage. Une fois les mines tirées, le minerai est chargé et évacué par l'arrière [...]. L'abattage va donc en reculant dans chaque galerie de sous-étage, les sous-étages étant exploités en descendant.

Spanish

Save record 11

Record 12 1991-09-24

English

Subject field(s)
  • Metals Mining
CONT

The tendency with many metals during this century has been to mine lower and lower grade ores.

CONT

Ore grades are somewhat variable. The lowest grade of working deposit in western countries appears to be... [a] mine working 0. 2% Ni ore. This low grade can be compared with the very high grade sections of some Western Australian deposits that run about 12% Ni. Of course, the overall grade for Australian deposits is less than this because lower grade ore is mined with these high grades.

French

Domaine(s)
  • Mines métalliques
CONT

(...) la découverte d'un nouveau procédé de traitement permettra d'extraire des minerais à teneur plus faible (...)

Spanish

Save record 12

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