Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.80-4.155.85-6.15
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
perfect along [010] and [100]
Fair in four directions forming octahedrons
Mohs Hardness
3.5-43.5-4
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references