Tenacity
Brittle
Brittle
Solubility
Soluble
-
Durability
-
-
Specific Gravity
1.9932.72-2.75
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
Perfect on [100], [010], [001]
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
2.56-6.5
2
10
👆🏻
Chemical Composition
KCl
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)