Tenacity
-
-
Solubility
-
Insoluble in acids
Durability
-
-
Specific Gravity
2.69-2.794.20-4.30
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
Poor on {0001}
{110} good, 100 moderate, parting on {092} and {011}
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
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)