Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.82-3.972.27-2.33
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Perfect on [001] and [011]
Perfect
Mohs Hardness
5.5-65.5-6
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)