Tenacity
Brittle
Brittle
Solubility
-
insoluble in water
Durability
-
-
Specific Gravity
4.00-4.655.00-5.20
1
7.18
👆🏻
Fracture
Uneven, Sub-Conchoidal
Uneven, Conchoidal, ConchoidalWalter Schumann
Cleavage
Perfect on [1011]
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
5-5.56-6.5
2
10
👆🏻
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references