Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
5.26.86-7.03
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
None
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5.5-6.56-7
2
10
👆🏻
Chemical Composition
Fe 3O 4Ulrich Henn and Claudio C.
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references