Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.95-4.103.25-3.35
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, ConchoidalWalter Schumann
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
Perfect in three directions
Mohs Hardness
3.5-45
2
10
👆🏻
Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references