Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.72-2.755.9-6.3
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
Perfect on [001], good on [010], imperfect on [110]
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
6-6.54.5-5
2
10
👆🏻
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references