Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.79-3.945.00-5.30
1
7.18
👆🏻
Fracture
Lamellar, Splintery
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{100} Good, {001} Good, {010} Poor
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
46
2
10
👆🏻
Chemical Composition
FeAs
Fe 2O 3Arthur Thomas , Gemstones (2009)