Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.52.79
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{100} and {010} perfect
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
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.