Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.25-3.353.16-3.43
1
7.18
👆🏻
Fracture
Conchoidal, ConchoidalWalter Schumann
Uneven, Conchoidal
Cleavage
Perfect in three directions
{110} Good, {110} Good
Mohs Hardness
55-6
2
10
👆🏻
Chemical Composition
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)