Iron ore - WikipediaIron 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 grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe . Ores containing very high quantities of hematite or magnetite (greater than.ice goethite crusher grater,Goethite - WikipediaGoethite is an iron-bearing hydroxide mineral of the diaspore group. It is found in soil and other low-temperature environments. Goethite has been well known.Goethite: Mineral information, data and localities. - MindatThe most common simple iron oxide mineral. A weathering product of numerous iron-bearing minerals. Goethite may crystallize from a precursor - a not .
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