1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Conchoidal
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
1.6 Cleavage
none, may show indistinct parting
None, may show partings on {0001} and {10 1 1}
1.7 Mohs Hardness
1.8 Chemical Composition
(Mg,Fe)3Al2Si3O12
Fe 2O 3Arthur Thomas , Gemstones (2009)