Magnetite

Spinel structural group | boxwidth = | image = Magnetite.jpg | alt = Magnetite exposed on the ground. The mineral is black and irregularly smooth. Individual chunks jut at angles characteristic of the crystal habit. | caption = Magnetite and pyrite from Piedmont, Italy | formula = iron(II,III) oxide, Fe2+Fe3+2O4 | strunz = 04.BB.05 | symmetry = Is...
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magnetite

[n] - an oxide of iron that is strongly attracted by magnets
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Magnetite

• (n.) An oxide of iron (Fe3O4) occurring in isometric crystals, also massive, of a black color and metallic luster. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone. It is an important iron ore. Called also magnetic iron.
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magnetite

magnetic iron-ore noun an oxide of iron that is strongly attracted by magnets
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Magnetite

Mag'net·ite noun (Min.) An oxide of iron (Fe 3 O 4 ) occurring in isometric crystals, also massive, of a black color and metallic luster. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone . It is an important iron ore. Ca...
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magnetite

A black, cubic, strongly magnetic, opaque mineral, Fe3O4.
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Magnetite

A common Iron-containing mineral with ferromagnetic properties.
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Magnetite

A major form of iron ore. See also Haematite and Limonite.
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Magnetite

A major form of iron ore. See also Haematite and Limonite.
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Magnetite

An aggregate used in heavy weight concrete, consisting primarily of ferrous metaferrite (Fe304). A black magnetic iron ore with a specific gravity of approximately 5.2 and a Mohs hardness of about 6.
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Magnetite

Black, magnetic iron ore, an iron oxide.
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Magnetite

Black, magnetic iron ore, an iron oxide.
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Magnetite

Black, magnetic iron ore, an iron oxide.
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magnetite

Black, strongly magnetic opaque mineral, Fe3O4, of the spinel group, an important ore of iron. Widely distributed, magnetite is found in nearly all igneous and metamorphic rocks. Some deposits, called lodestone, are permanently magnetized. Lodestone has been used as a compass since the first millennium ...
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Magnetite

Fe3O4, Iron Oxide – a dense metallic grey ore mineral of iron.
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Magnetite

Iron oxide ( Fe3O4). A protective coating the forms on iron pipe to prevent further rapid corrosion. Usually black or maroon in color. Can be very destructive to mechanical seal components until the oxide stabalizes. We often find these iron pipes in new hot water systems
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magnetite

iron oxide mineral (FeFe2O4, or Fe3O4) that is the chief member of one of the series of the spinel (q.v.) group. Minerals in this series form black ... [15 related articles]
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Magnetite

Iron oxide, ferrosoferric
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magnetite

magnetite (măg'nutīt) , lustrous black, magnetic mineral, Fe3O4. It occurs in crystals of the cubic system, in masses, and as a loose sand. It is one of the important ores of iron (magnetic iron ore) and is a common constituent of igneous and metamorphic rocks. It is found in Norway,...
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Magnetite

Magnetite is an oxide of iron occurring in isometric crystals, also massive, of a black colour and metallic lustre. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone. It is an important iron ore and is also called magnetic iron. Magnetite has the formulae Fe3O4 and a relative hardness of 7.
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Magnetite

the mineral form of black iron oxide, often found with magnesium, zinc, and manganese. An ore of iron. Also known as black sand.
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