iron ore hematite magnetite

  • Types of Iron Ore: Hematite vs. Magnetite Investing

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    Iron ore is most often found in the form of hematite and magnetite. Learn what makes those types of iron ore different and make an informed investment.

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  • Iron Ore Geoscience Australia

    Jun 30, 2016· Magnetite contains 72.4% iron, which is higher than hematite, but the presence of impurities usually results in magnetite ores having lower ore grade (generally 20-30% Fe) than hematite ores, making it more

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  • Wisconsin Geological & Natural History Survey » Hematite

    Needle Ore hematite, ... Hematite is found as martite pseudomorphs after magnetite in iron formation outcropping on mounds in the Black River Falls ...

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  • Magnetite forrnation by the reduction of hematite

    American Mineralogist, Volume 6l pages 927-932, 1976 Magnetite forrnation by the reduction of hematite with iron under hydrothermal conditions

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  • Iron ore Wikipedia

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    Hematite: the main iron ore in Brazilian mines. ... Other sources of magnetite iron ore include metamorphic accumulations of massive magnetite ore such as at Savage ...