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magnetite

Line breaks: mag¦net|ite
Pronunciation: /ˈmaɡnɪtʌɪt
 
/

Definition of magnetite in English:

noun

[mass noun]
A grey-black magnetic mineral which consists of an oxide of iron and is an important form of iron ore.
Example sentences
  • The majority of the rhyolites are porphyritic and contain phenocrysts of one or more of the following: plagioclase, clinopyroxene, magnetite, quartz and sanidine, plus accessory apatite and zircon.
  • The sample is composed of K-feldspar, plagioclase and quartz with accessory apatite, magnetite, titanite, zircon and secondary epidote.
  • Along the contact zone the limestones were recrystallized into a cloudy white, massive calcite containing grossular, epidote, magnetite, quartz, and tremolite.

Origin

mid 19th century: from magnet + -ite1.

Definition of magnetite in:

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