Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
3.25-3.353.1-3.2
1
7.18
👆🏻
Fracture
Conchoidal, ConchoidalWalter Schumann
-
Cleavage
Perfect in three directions
Vitreous, pearly on cleavage
Mohs Hardness
53-4
2
10
👆🏻
Chemical Composition
CuSiO 2(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