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FACIES SILICATE [1 record]

Record 1 2006-06-01

English

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

Silicate facies. Iron silicate minerals are generally associated with magnetite, siderite and chert. These form layers alternating with each other. This mineralogy suggests that the silicate facies forms in an environment common to parts of the oxide and carbonate facies. However, of all the facies of BIF, the depositional environment for iron silicates is least understood.

CONT

Iron oxide-rich facies with a minimum of associated carbonate or silicate facies are selected for ore.

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

Dans le district d'Iron River (Michigan), la superposition des faciès minéralogiques rappelle celle de Lorraine [...]; en partant de la base se succèdent : le faciès sulfuré, le faciès carbonaté et un faciès silicaté.

CONT

Tant [en Nouvelle-Calédonie] qu'en Côte d'Ivoire les teneurs en NiO des faciès silicates varient de 1 à 2 % dans le faciès oxydé et peuvent dépasser 2 %.

Spanish

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