Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
5.52.93-2.96
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
5-5.53.5-4
2
10
👆🏻
Chemical Composition
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references