Minerals

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General Information

Magnetite

Magnetite is magnetic by nature and is therefore used in many permanent magnets.[1]

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Chemical & Physical Information

Trivial NameMagnetite
Chemical NameIron(II,III) Oxide
Chemical FormulaFe3+2Fe2+O4
Density5,17-5,18 g·cm-3
Molar mass?
Hardness5,5-6
Crytal systemIsometrical
Unit cell?
Crystal habitOctahedral
FractureUneven
CleavageUnclear
ColourBlack, grey, brown
LusterMetal
StreakBlack
OpacityOpaque
SafetySafe
ExtraMagnetic
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Photos

Magnetite

(1 cm)

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Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.