Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.80-4.153.19-3.56
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
perfect along [010] and [100]
{110} Perfect, {010} Indistinct
Mohs Hardness
3.5-45.5-6
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)