Name the main varieties of iron ore and the iron content present in each one of them.
- Magnetite, haematite, Goethite
and limonite or siderite are different types of ores of iron.
- The iron is usually found in
the form of magnetite which has 72.4% iron, hematite with 69.9%
iron, goethite with 62.9% iron, limonite or siderite with 48.2%
iron.