Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.403.70-3.90
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Perfect
Perfect on {011}, fair on {100}, poor on {110}
Mohs Hardness
5-63.5-4
2
10
👆🏻
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references