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Hematite vs Magnetite

Hematite and Magnetite are easy to confuse. Here’s how they stack up on the properties that actually separate them.

HematiteMagnetite
ColourBlack, Gray, RedBlack, Gray, Brown
Mohs hardness5.5–6.55.5–6.5
LustreMetallic to splendentMetallic
StreakBright red to dark redBlack
Crystal systemTrigonalIsometric
TransparencyOpaqueOpaque
CleavageNone, may show partings on {0001} and {101}Indistinct, parting on {Ill}, very good
FractureUneven to subconchoidalUneven
Chemical formulairon(III) oxide, Fe 2 O 3 , α-Fe 2 O 3iron(II,III) oxide
Specific gravity5.265.17–5.18

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Frequently asked questions

What's the easiest way to tell Hematite from Magnetite?
Compare lustre, streak and crystal habit side by side — colour alone won't settle it.