Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.80-4.153.1-3.2
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
perfect along [010] and [100]
Vitreous, pearly on cleavage
Mohs Hardness
3.5-43-4
2
10
👆🏻
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references