Tenacity
Brittle
Brittle
Solubility
Dilute acid
-
Durability
-
-
Specific Gravity
2.93-2.963.70-3.90
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Distinct on {010}, imperfect {110} and {011}
Perfect on {011}, fair on {100}, poor on {110}
Mohs Hardness
3.5-43.5-4
2
10
👆🏻
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references