Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.76-3.775.00-5.30
1
7.18
👆🏻
Fracture
-
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{110} Perfect, {110} Perfect
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
5-66
2
10
👆🏻
Chemical Composition
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Fe 2O 3Arthur Thomas , Gemstones (2009)