Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.442.69-2.79
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
None Observed
Poor on {0001}
Mohs Hardness
6.5-75.5-6.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references