Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.295.5
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
Very poor [100]
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
5-5.55-5.5
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references