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There are two differnt isotopes of iron ores, Fe2+ and Fe3+, thus causing two different possible iron oxide compounds. These two compounds are ferrous and ferric oxide. (Gollady) The most abundant and sought after mineral comes from the Hematite Group. The Hematite group consists of Corundum, Hematite, and Ilmentite. THis group is more or less an informal group of closely related trigonal oxides. Their relationship is linked through their similar structures (Amethyst Galleries). Hematite is a ferric oxide. It is one of the major constituents of iron. |
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