Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.85-6.153.43-3.44
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Fair in four directions forming octahedrons
None Observed
Mohs Hardness
3.5-46.5-7
2
10
👆🏻
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references