Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.69-2.793.08-3.12
1
7.18
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Fracture
Conchoidal
ConchoidalWalter Schumann
Cleavage
Poor on {0001}
{010} Perfect
Mohs Hardness
5.5-6.57.5
2
10
👆🏻
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references