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    Iron Oxide

    Any of a variety of iron-oxygen compounds used as pigments in the manufacture of printing inks. Iron oxides vary in color from yellow to brown, from brown to red, and from red to black. Iron oxides can occur naturally (such as the mineral hematite and rust) and can be specially manufactured. Some iron oxides are useful in magnetic ink (such as magnetite), and iron oxide is also used as a coating for recording tape. Iron oxide is also called ferric oxide. Iron oxide pigments are used frequently in screen printing inks.

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