a black magnetic mineral, found in igneous and metamorphic rocks and as a separate deposit. It is a source of iron. Composition: iron oxide. Formula: Fe3O4. Crystal structure: cubic
Derived forms
magnetitic (ˌmæɡnɪˈtɪtɪk)
adjective
magnetite in American English
(ˈmægnəˌtaɪt)
noun
a black, hard, magnetic mineral, (Fe,Mg)Fe2O4, that is a major ore of iron