Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.32-4.482.55-2.65
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
{101}, good; {010}, poor
Perfect {10 1 0}
Mohs Hardness
3.55.5-6
2
10
👆🏻
Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)