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magnetite
This term refers specifically to a mineral species rather than a general magnetic property. It is used primarily in geological, mineralogical, and industrial contexts to describe the specific chemical compound Fe3O4. The word carries a technical, scientific connotation and is rarely used in casual conversation unless discussing rock formations or ore mining.
As a mass noun representing a chemical substance, it is typically treated as uncountable. When referring to specific crystals or samples of the mineral, speakers may use partitive constructions such as a grain of magnetite or a sample of magnetite to specify quantity.
Meanings
Examples
Magnetite is the most magnetic of all the naturally occurring minerals.
The teacher explained how magnetite can be used to create a natural compass.
I wonder if this black sand contains a high percentage of magnetite.
Ancient sailors may have used lodestone, which is naturally magnetized magnetite, for navigation.
The sample is primarily composed of magnetite and hematite.
Look at how the magnetite crystals align with the magnetic field.
The ore was rich in magnetite, making it an ideal source for iron extraction.
Some birds are thought to have magnetite in their beaks to help them migrate.