Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.69-2.793.80-4.15
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Poor on {0001}
perfect along [010] and [100]
Mohs Hardness
5.5-6.53.5-4
2
10
👆🏻
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references