Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Uneven, Subconchoidal, Conchoidal
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°