Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.80-4.153.90-4.00
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
perfect along [010] and [100]
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
3.5-43-3.5
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references