Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.52.82
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect in one direction, indistinct in one direction
Mohs Hardness
5-5.56
2
10
👆🏻
Chemical Composition
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]