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- Dictionarymagnetite/ˈmaɡnɪtʌɪt/
noun
- 1. a grey-black magnetic mineral which consists of an oxide of iron and is an important form of iron ore.
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noun
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Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe2+Fe3+2O4. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth. Naturally magnetized pieces of m... Wikipedia