Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
5.56.86-7.03
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5-5.56-7
2
10
👆🏻
Chemical Composition
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references