Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.56-2.622.27-2.33
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
From the Greek for oblique and fracture, descriptive of the cleavage
Perfect
Mohs Hardness
6-6.55.5-6
2
10
👆🏻
Chemical Composition
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)