TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A schist in which the main constituent, chlorite, imparts a schistosity by parallel arrangement of its flakes. Quartz, epidote, magnetite, and garnet are accessories, the last two often as conspicuous porphyroblasts.  3, fiche 1, Anglais, - chlorite%20schist

Record number: 1, Textual support number: 1 CONT

The volcano-sedimentary sequence, the main host to gold-bearing veins, consists of greywacke, chlorite schist, polymictic conglomerate and oxide facies iron formation.  4, fiche 1, Anglais, - chlorite%20schist

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Roche métamorphique foliée, riche en chlorite, qui lui donne une couleur verte.  3, fiche 1, Français, - chloritoschiste

Record number: 1, Textual support number: 1 CONT

[...] les chloritoschistes, de coloration vert foncé, présentent d'abondantes paillettes vertes de chlorite bien visibles à l'œil nu, et renferment fréquemment des octaèdres de grenat.  4, fiche 1, Français, - chloritoschiste

Record number: 1, Textual support number: 2 CONT

[...] en Afrique équatoriale, on est frappé par la contiguïté des quartzites ferrugineux avec des chlorito- et amphiboloschistes [...] dérivant de vieilles coulées basiques.  5, fiche 1, Français, - chloritoschiste

Record number: 1, Textual support number: 1 OBS

Ne pas confondre avec «schiste chloriteux» et «schiste chloritique» qui renferment une proportion moindre de chlorite.  2, fiche 1, Français, - chloritoschiste

Fiche 1,  Justifications,  Espagnol

Record number: 1, Textual support number: 1 DEF

Roca metamórfica [...] constituida esencialmente por pajuelas de clorita que forman esquistos verdosos.  1, fiche 1, Espagnol, - cloritoesquisto

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Oxide facies... is the most important facies. It can be divided into the hematite and magnetite subfacies according to which iron oxide is dominant. There is a complete gradation between the two subfacies.... Oxide facies BIF [banded iron formation] typically averages 30-35% Fe. These rocks are mineable provided they are amenable to beneficiation by magnetic or gravity separation of the iron minerals.  3, fiche 2, Anglais, - oxide%20facies

Record number: 2, Textual support number: 2 CONT

Well segregated oxide facies containing 30% or more iron in discrete grains or grain clusters of hematite, magnetite and goethite uniformly distributed in a cherty or granular quartz matrix are most suitable for ore. Oxide facies are selected that are clearly segregated from silicate, carbonate or sulphide facies and other barren rock ...  4, fiche 2, Anglais, - oxide%20facies

Record number: 2, Textual support number: 1 PHR

Manganese oxide facies.  2, fiche 2, Anglais, - oxide%20facies

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

Diagramme montrant les principaux types de formations ferrifères résultant d'une précipitation chimique; on donne aussi le faciès de sédimentation [...]. Faciès oxyde. Faciès silicate. Faciès carbonate. Faciès sulfure.  2, fiche 2, Français, - faci%C3%A8s%20oxyd%C3%A9

Record number: 2, Textual support number: 2 CONT

[...] plusieurs relations faciologiques, incluant les faciès oxydés, carbonatés, silicatés et sulfurés généralement reconnus dans les formations de fer, sont maintenant documentées dans la grande partie des stratafers.  1, fiche 2, Français, - faci%C3%A8s%20oxyd%C3%A9

Record number: 2, Textual support number: 1 PHR

Faciès oxydé manganésifère.  1, fiche 2, Français, - faci%C3%A8s%20oxyd%C3%A9

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

Chemically precipitated iron formation composed of thinly banded chert and iron minerals with associated volcanic rocks and graywackes.  7, fiche 3, Anglais, - Algoma%20iron%20formation

Record number: 3, Textual support number: 1 CONT

Algoma type. This type is characteristic of the Archaean greenstone belts where it finds its most widespread development. It also occurs... in younger rocks including the Phanerozoic. It shows a greywacke-volcanic association suggesting a geosynclinal environment. The oxide, carbonate and sulphide facies are present, with iron silicates often appearing in the carbonate facies. Algoma-type BIF [banded iron formation] generally ranges from a few centimetres to a hundred or so metres in thickness...  1, fiche 3, Anglais, - Algoma%20iron%20formation

Record number: 3, Textual support number: 2 CONT

Significant gold in non-stratiform type deposits is associated with sulphide-rich Algoma-type BIF that occurs in either sediment- or volcanic-dominated portions of greenstone belt terrains.  8, fiche 3, Anglais, - Algoma%20iron%20formation

Record number: 3, Textual support number: 1 OBS

[This type of iron-formation] is found along volcanic arcs, chiefly Archean in age ...  7, fiche 3, Anglais, - Algoma%20iron%20formation

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

La formation ferrifère du type Algoma a été déposée avec des roches volcaniques et sédimentaires caractéristiques du milieu eugéosynclinal [...] Les formations du type Algoma ont une épaisseur allant de quelques pouces à plus de 100 pieds [...]  2, fiche 3, Français, - formation%20de%20fer%20de%20type%20Algoma

Record number: 3, Textual support number: 2 CONT

Les formations ferrifères stratifiées du type Algoma s'étendent généralement dans les zones volcano-sédimentaires. Les parties les plus étendues et les plus riches de ces formations peuvent constituer des massifs de minerai.  2, fiche 3, Français, - formation%20de%20fer%20de%20type%20Algoma

Record number: 3, Textual support number: 3 CONT

Presque toutes les zones de roches volcaniques et sédimentaires dans les provinces tectoniques du lac Supérieur et de Churchill contiennent quelques formations de fer du type «Algoma».  2, fiche 3, Français, - formation%20de%20fer%20de%20type%20Algoma

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 DEF

An iron formation in which the principal iron-rich minerals are oxides, typically hematite or magnetite ...  5, fiche 4, Anglais, - oxide%2Dfacies%20iron%20formation

Record number: 4, Textual support number: 1 CONT

Sulphides generally comprise less than 10% of the altered rocks, except in oxide facies iron formation, in which they may represent up to 75% of the metasomatised rock.  3, fiche 4, Anglais, - oxide%2Dfacies%20iron%20formation

Record number: 4, Textual support number: 2 CONT

Oxide facies BIF typically averages 30-35% Fe. These rocks are mineable provided they are amenable to beneficiation by magnetic or gravity separation of the iron minerals.  4, fiche 4, Anglais, - oxide%2Dfacies%20iron%20formation

Record number: 4, Textual support number: 1 OBS

[The oxide-facies iron formation] is thought to be the shoreward facies of iron formation.  5, fiche 4, Anglais, - oxide%2Dfacies%20iron%20formation

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 DEF

An iron formation in which the principal iron minerals are silicates, such as greenalite, stilpnomelane, minnesotaite, and iron-rich chlorite ...  1, fiche 5, Anglais, - silicate%2Dfacies%20iron%20formation

Record number: 5, Textual support number: 1 OBS

Banded iron formation is characterized by its fine layering.... The simplest and commonest BIF consists of alternating hematite and chert layers.... James(1954) identified four important facies of BIF.(a) Oxide facies....(b) Carbonate facies....(c) Silicate facies....(d) Sulphide facies.  2, fiche 5, Anglais, - silicate%2Dfacies%20iron%20formation

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 OBS

Diagramme montrant les principaux types de formations ferrifères résultant d'une précipitation chimique; on donne aussi le faciès de sédimentation [...]. Faciès oxyde. Faciès silicate. Faciès carbonate. Faciès sulfure.  2, fiche 5, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20silicat%C3%A9

Record number: 5, Textual support number: 2 OBS

Voir aussi la fiche «faciès silicaté».  1, fiche 5, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20silicat%C3%A9

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 DEF

An iron formation consisting essentially of pyritic carbonaceous slate. It was formed in the deeper, reducing parts of seas or basins.  1, fiche 6, Anglais, - sulfide%2Dfacies%20iron%20formation

Record number: 6, Textual support number: 1 CONT

The sulphide-rich BIF in the stratiform deposits may be considered a true sulphide facies BIF and was most probably deposited from hydrothermal fluids during chemical sedimentation.  3, fiche 6, Anglais, - sulfide%2Dfacies%20iron%20formation

Record number: 6, Textual support number: 1 OBS

Banded iron formation is characterized by its fine layering.... The simplest and commonest BIF consists of alternating hematite and chert layers.... James(1954) identified four important facies of BIF.(a) Oxide facies....(b) Carbonate facies....(c) Silicate facies....(d) Sulphide facies.  4, fiche 6, Anglais, - sulfide%2Dfacies%20iron%20formation

Fiche 6,  Justifications,  Français

Record number: 6, Textual support number: 1 OBS

Diagramme montrant les principaux types de formations ferrifères résultant d'une précipitation chimique; on donne aussi le faciès de sédimentation [...]. Faciès oxyde. Faciès silicate. Faciès carbonate. Faciès sulfure.  2, fiche 6, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20sulfure

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

An iron formation characterized by alternating laminae of chert and iron-rich carbonate minerals ...  1, fiche 7, Anglais, - carbonate%2Dfacies%20iron%20formation

Record number: 7, Textual support number: 1 OBS

Banded iron formation is characterized by its fine layering.... The simplest and commonest BIF consists of alternating hematite and chert layers.... James(1954) identified four important facies of BIF.(a) Oxide facies....(b) Carbonate facies....(c) Silicate facies....(d) Sulphide facies.  3, fiche 7, Anglais, - carbonate%2Dfacies%20iron%20formation

Fiche 7,  Justifications,  Français

Record number: 7, Textual support number: 1 OBS

Diagramme montrant les principaux types de formations ferrifères résultant d'une précipitation chimique; on donne aussi le faciès de sédimentation [...]. Faciès oxyde. Faciès silicate. Faciès carbonate. Faciès sulfure.  3, fiche 7, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20carbonat%C3%A9

Record number: 7, Textual support number: 1 CONT

Les B.I.F. oxydés et carbonatés sont fréquents.  2, fiche 7, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20carbonat%C3%A9

Record number: 7, Textual support number: 2 OBS

Voir fiches «formation ferrifère rubanée» et «faciès carbonaté».  1, fiche 7, Français, - formation%20ferrif%C3%A8re%20%C3%A0%20faci%C3%A8s%20carbonat%C3%A9

Fiche 7,  Justifications,  Espagnol

Fiche 8,  Justifications,  Anglais

Record number: 8, Textual support number: 1 CONT

Sedimentary rocks have been intruded by ....  2, fiche 8, Anglais, - be%20intruded%20by

Record number: 8, Textual support number: 2 CONT

The volcano-sedimentary sequence... consists of greywacke, chlorite schist, polymictic conglomerate and oxide facies iron formation. These rocks have been intruded by gabbro, diorite and by quartz....  3, fiche 8, Anglais, - be%20intruded%20by

Fiche 8,  Justifications,  Français

Record number: 8, Textual support number: 1 CONT

Les roches sédimentaires ont subi l'intrusion de [...]  1, fiche 8, Français, - subir%20l%27intrusion%20de

Record number: 8, Textual support number: 1 OBS

intrusion : mise en place de matière minérale d'origine profonde, par pénétration à l'intérieur de roches préexistantes, sans venue au jour.  3, fiche 8, Français, - subir%20l%27intrusion%20de

Fiche 8,  Justifications,  Espagnol