Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.70-3.902.90-3.00
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
Perfect on {011}, fair on {100}, poor on {110}
None
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references