1) Gemstone 2) Iron mineral 3) Iron ore 4) Iron oxide pigment 5) Iron ore 6) Magnetic iron-ore
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https://www.crosswordclues.com/clue/magnetite
1) Iron ore 2) Ore
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https://www.crosswordclues.com/clue/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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http://en.wikipedia.org/wiki/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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http://thinkexist.com/dictionary/meaning/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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http://www.britannica.com/eb/a-z/m/11
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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http://www.encyclo.co.uk/webster/M/6
A black, cubic, strongly magnetic, opaque mineral, Fe3O4.
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http://www.lpi.usra.edu/publications/slidesets/marslife/glossary.shtml
A major form of iron ore. See also Haematite and Limonite.
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http://www.metalbulletin.com/Glossary.html
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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http://www.probertencyclopaedia.com/browse/HM.HTM
Iron oxide, ferrosoferric
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http://www.translationdirectory.com/glossaries/glossary075.htm
[
n] - an oxide of iron that is strongly attracted by magnets
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http://www.webdictionary.co.uk/definition.php?query=magnetite
a mineral with magnetic properties
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https://sciencetrek.org/sciencetrek/topics/bird_migration/glossary.cfm
The oxide or iron of intermediate valence which has a composition close to the stoichiometric composition Fe3O4.
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https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
magnetic iron-ore noun an oxide of iron that is strongly attracted by magnets
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https://www.encyclo.co.uk/local/20974
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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https://www.encyclo.co.uk/local/21066
Iron oxide ( Fe
3O
4). 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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https://www.encyclo.co.uk/local/21120
Black, strongly magnetic opaque mineral, Fe
3O
4, 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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https://www.encyclo.co.uk/local/21221
A common Iron-containing mineral with ferromagnetic properties.
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https://www.encyclo.co.uk/local/21463
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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https://www.encyclo.co.uk/local/22703
Black, magnetic iron ore, an iron oxide.
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https://www.encyclo.co.uk/local/22709
Black, magnetic iron ore, an iron oxide.
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https://www.encyclo.co.uk/local/22733
Fe3O4, Iron Oxide a dense metallic grey ore mineral of iron.
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https://www.encyclo.co.uk/local/22733
Black, magnetic iron ore, an iron oxide.
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https://www.encyclo.co.uk/local/22734
The oxide or iron of intermediate valence which has a composition close to the stoichiometric composition Fe3O4.
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https://www.unifiedalloys.com/resources/glossary/
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