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      Question

      Which one of the following is not an iron

      ore?
      A Hematite Correct Answer Incorrect Answer
      B Magnetite Correct Answer Incorrect Answer
      C Anthracite Correct Answer Incorrect Answer
      D Siderite Correct Answer Incorrect Answer

      Solution

      The most widely distributed iron-bearing minerals are oxides, and iron ores consist mainly of hematite (Fe2O3), which is red; magnetite (Fe3O4), which is black; limonite or bog-iron ore (2Fe2O3Β·3H2O), which is brown; and siderite (FeCO3), which is pale brown. Anthracite is a type of coal .

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