Tenacity
Brittle
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
4.00-4.656.86-7.03
1
7.18
👆🏻
Fracture
Uneven, Sub-Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Perfect on [1011]
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5-5.56-7
2
10
👆🏻
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references