Tenacity
Brittle
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
6.86-7.035.00-5.30
1
7.18
👆🏻
Fracture
Subconchoidal, Uneven, Conchoidal, Irregular
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
6-76
2
10
👆🏻
Chemical Composition
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe 2O 3Arthur Thomas , Gemstones (2009)