Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.32-4.485.50-5.90
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
{101}, good; {010}, poor
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
3.54
2
10
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Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)