Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.32-4.486.50-7.00
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
Irregular, Conchoidal
Cleavage
{101}, good; {010}, poor
On {011}, distinct; on {001}, {013}, indistinct
Mohs Hardness
3.53
2
10
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Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
PbMoO 4Walter Schumann , Gemstones of the world (2001)