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HEMATITE GRAIN [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2006-08-03

English

Subject field(s)
  • Petrography
CONT

Mineral and grain development should provide granular textures with well defined sharp grain boundaries to facilitate liberation and separation of metallic minerals... These features are usually achieved in highly metamorphosed iron-formation where there is optimum grain enlargement, and magnetite facies are usually preferred over hematite or mixed facies crude ore.

French

Domaine(s)
  • Pétrographie

Spanish

Save record 1

Record 2 2006-06-06

English

Subject field(s)
  • Iron and Manganese Mining
  • Geochemistry
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.

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...

PHR

Manganese oxide facies.

French

Domaine(s)
  • Mines de fer et de manganèse
  • Géochimie
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.

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.

PHR

Faciès oxydé manganésifère.

Spanish

Save record 2

Record 3 2006-02-02

English

Subject field(s)
  • Mineralogy

French

Domaine(s)
  • Minéralogie

Spanish

Save record 3

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