Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.27-2.333.87-4.14
1
7.18
👆🏻
Fracture
-
Subconchoidal, Conchoidal
Cleavage
Perfect
Poor on {120}, in traces on {001}
Mohs Hardness
5.5-65.5-6
2
10
👆🏻
Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references