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 color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite , hematite ( Fe. 2O.
The iron minerals that are at present used as ores are hematite, magnetite, limonite, and siderite; also, occasionally ankerite, goethite, and turgite. Hematite is the most important iron ore. The iron content of the pure minerals is as follows: Ankerite is a carbonate of lime, magnesia, manganese, and iron.
The iron minerals have not received the attention that has been given other metallic ores 1 yet the amount of prospecting that has been done on many of the occurrences is surprising when the sca11t market is considered.
Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel. Raw iron is alloyed with a variety of elements to strengthen and harden it, making useful steel for construction, automobiles, and other forms of transportation such as trucks ...
Iron ore is a mineral substance which, when heated in the presence of a reductant, will yield metallic iron . It almost always consists of iron oxides, the primary forms of which are magnetite and hematite . Iron ore is the source of primary iron for the world39;s iron and steel industries.