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iron ore |
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iron oreAny mineral from which iron is extracted. The chief iron ores are magnetite, a black oxide; haematite, or kidney ore, a reddish oxide; limonite, brown, impure oxyhydroxides of iron; and siderite, a brownish carbonate. Iron ores are found in a number of different forms, including distinct layers in igneous intrusions, as components of contact metamorphic rocks, and as sedimentary beds. Much of the world's iron is extracted in Russia, Kazakhstan, and the Ukraine. Other important producers are the USA, Australia, France, Brazil, and Canada; over 40 countries produce significant quantities of ore. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| COMPANHIA VALE DO RIO DOCE, the country's leading producer of iron ores bought a majority stake in mining company Samitri for US$530 million. Using a sensitive monopole detector, the researchers examined more than 331 kilograms of material, including iron ores, ferromanganese nodules, and 112 kg of meteorites, before coming to their conclusion. Assaying and analytical work are performed by SGS Lakefield Research Limited ("Lakefield") under a strict protocol designed for testing lump iron ores. |
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iron ores
