Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
5.00-5.306.50-7.00
1
7.18
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Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Irregular, Conchoidal
Cleavage
None, may show partings on {0001} and {10 1 1}
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
63
2
10
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Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
PbMoO 4Walter Schumann , Gemstones of the world (2001)