Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.70-3.903.43-3.44
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Perfect on {011}, fair on {100}, poor on {110}
None Observed
Mohs Hardness
3.5-46.5-7
2
10
👆🏻
Chemical Composition
Cu 3(OH) 2(CO 3) 2Michael 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