Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.70-3.902.69-2.79
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Perfect on {011}, fair on {100}, poor on {110}
Poor on {0001}
Mohs Hardness
3.5-45.5-6.5
2
10
👆🏻
Chemical Composition
Cu 3(OH) 2(CO 3) 2Michael 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