Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.00-4.653.87-4.14
1
7.18
👆🏻
Fracture
Uneven, Sub-Conchoidal
Subconchoidal, Conchoidal
Cleavage
Perfect on [1011]
Poor on {120}, in traces on {001}
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references