TERMIUM Plus®

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ITABIRITE [1 record]

Record 1 2006-06-06

English

Subject field(s)
  • Iron and Manganese Mining
  • Petrography
DEF

A laminated, metamorphosed, oxide-facies iron formation in which the original chert or jasper bands have been recrystallized into megascopically distinguished grains of quartz and in which the iron is present as thin layers of hematite, magnetite, or martite ...

OBS

itabirite: Named from Itabira, Brazil.

French

Domaine(s)
  • Mines de fer et de manganèse
  • Pétrographie
DEF

Quartzites rubanés à magnétite, à hématite, passant à de véritables minerais de fer [...]

CONT

Dans les boucliers antécambriens on rencontre de puissantes formations de roches sédimentaires siliceuses et ferrugineuses, à magnétite, oligiste et martite [...] On les désigne sous [le nom de] [...] itabirites au Brésil.

OBS

Schiste du Brésil appelé encore micaschiste ferrifère.

Spanish

Campo(s) temático(s)
  • Minas de hierro y de manganeso
  • Petrografía
DEF

Micacita en la cual el oligisto adopta la forma de laminillas negras dispuestas entre los granos de cuarzo.

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