Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.69-2.792.60-2.65
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
Poor on {0001}
Perfect on {001}, very good on {010}, imperfect on {110}
Mohs Hardness
5.5-6.56-6.5
2
10
👆🏻
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)