Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.85-6.153.25-3.50
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Fibrous
Cleavage
Fair in four directions forming octahedrons
{001} perfect and {100} imperfect
Mohs Hardness
3.5-46-7
2
10
👆🏻
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references