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  • Iron ore Wikipedia

    Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark.

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  • Hematite: A primary ore of iron and a pigment mineral Geology

    Hematite is the most important ore of iron and it has been used by people as a pigment for at least . Learn about the uses and properties of the mineral hematite.

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  • MINERAL RESOURCES AND MINING . The Handbook of Texas .

    Jun 15, 2010 . Minerals and mineral products of Texas are presented alphabetically in this article. . Iron ore and gypsum are also used in smaller amounts. . Production includes ball clay, bentonite, common clay and shale, fire clay, fuller's .. Gypsum is used in the manufacture of plaster of paris, wallboard, and cement.

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  • Iron Department of Energy

    Some ores are a mixture of minerals rich in iron. Other .. In the grinding circuit, rod, ball, or autogenous mills grind the taconite down into even smaller Loading and hauling equipment is used to transport ore from the mine to a mill for.

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  • Taconite Digging into MN Minerals Minnesota DNR

    Information on mining taconite, a low grade iron ore, in Minnesota from the publication, . by the Minnesota Department of Natural Resources Division of Lands and Minerals. . The cylinders cause the powder to roll into marble sized balls.

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  • Mineral Resource of the Month: Iron Ore . EARTH Magazine

    In nature, elemental iron is found largely in either magnetite or hematite, both iron ore minerals. Nearly all iron ore whether used directly as lump ore or.

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