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2018-2-8 · Iron ore deposits are found in India, China, Brazil, Canada, Germany and United States of America. The ores include red haematite (Fe2O3), the less inferior brown hydrated haematite also known as limonite (2Fe2O3.3H2O), the magnetic magnetite (Fe3O4) which is black in colour and pyrites (FeS2). The haematite is easily reduced.