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FER SPECULAIRE [1 record]

Record 1 2011-01-24

English

Subject field(s)
  • Mineralogy
  • Iron and Manganese Mining
Universal entry(ies)
Fe2O3
formula, see observation
DEF

A black or gray variety of hematite with a splendent metallic luster, often showing iridescence.

CONT

Hematite in least altered BIF [banded iron formations] takes the form of fine-grained grey or bluish specularite.

OBS

It occurs in micaceous or foliated masses, or in tabular or disklike crystals.

OBS

[Gray hematite is] also called "micaceous hematite" if occurring in foliated or micaceous masses.

OBS

Chemical formula: Fe2O3

French

Domaine(s)
  • Minéralogie
  • Mines de fer et de manganèse
Entrée(s) universelle(s)
Fe2O3
formula, see observation
DEF

Variété en lames minces d'oligiste.

CONT

L'oligiste [...] se présente souvent en paillettes cristallines brillantes (fer spéculaire) avec de vives irisations.

OBS

Formule chimique : Fe2O3

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Minas de hierro y de manganeso
Entrada(s) universal(es)
Fe2O3
formula, see observation
OBS

OBS Fórmula química: Fe2O3

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