Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.00-4.653.05-3.21
1
7.18
👆🏻
Fracture
Uneven, Sub-Conchoidal
Uneven, Subconchoidal, Splintery
Cleavage
Perfect on [1011]
Good on {110}, poor on {100}
Mohs Hardness
5-5.57.5
2
10
👆🏻
Chemical Composition
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references