Itabirite

itabirite

[‚ēd·ə′bi‚rīt]
(geology)
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.

Itabirite

 

(name derived from Itabira, Brazil), a type of quartzite, rich in iron-ore minerals and containing some muscovite and sometimes fine grains of gold. Itabirite is used as an iron ore.

References in periodicals archive ?
In Brazil, iron ore is mainly extracted from hematite ores but can also be found in low grade itabirite ores which has iron content in the range of 35%--64%.
He has extensive international experience in iron ore operational design, including plant designs for the Zanaga project in Republic of Congo, MMX and Ponte Verde Itabirite in Brazil, the Lomonosovskoye project in Kazakhstan, the Shymanivske project in the Ukraine and iron ore operations in Chile.
Anglo American will continue to upgrade the confidence in the Compact Itabirite Indicated Mineral Resource through further drilling and will work to increase the Ore Reserves through conversion of these resources.
Izvorul Anestilor, Romania, 44[degrees]33, 22[degrees]51 Isla Norte, Chile, -54[degrees]54, -68[degrees]20 Oster Lina, Denmark, 56[degrees]13, 8[degrees]58 Rosentali, Estonia, 59[degrees]11, 26[degrees]38 iron-slate, OED in definition of itabirite Nitella furcata orentalis, Ip Roan Islet, UK, 57[degrees]42, -2[degrees]56 Tsilonera, Greece, 35[degrees]33, 24[degrees]4
Samarco mines relatively low-grade itabirite iron ore in the State of Minas Gerais in southeastern Brazil.
3 billion of itabirite hematite at 28% iron at Mbalam and 1.
Sundance will then proceed with development and production of the Itabirite deposits.
The characteristics of the iron ore deposits, with medial magnetism and with a typical Itabirite banding, are comparable to major deposits of iron ore in Brazil, especially the ones found in the central-south areas of Bahia and in the areas in north of Minas Gerais.
38 billion tonnes of Itabirite at 38 per cent Fe at Mbarga in Cameroon, and we also recently announced that Sundance plans to grow that further through more drilling in 2012.
It includes between 200-million and 300-million tons of potential deepened hematite cap iron mineralisation, and between 1,1-billion and 1,9-billion tons of primary itabirite iron mineralisation.
Under Stage Two, the extensive Itabirite Hematite Resource, which currently stands at 2.
Under Stage Two, the Company's extensive Itabirite Hematite resource at Mbarga, which currently stands at 2.