Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.16-3.433.25-3.35
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, ConchoidalWalter Schumann
Cleavage
{110} Good, {110} Good
Perfect in three directions
Mohs Hardness
5-65
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references