Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.00-5.303.76-3.77
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
-
Cleavage
None, may show partings on {0001} and {10 1 1}
{110} Perfect, {110} Perfect
Mohs Hardness
65-6
2
10
👆🏻
Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.