Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
5.353.98-4.04
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
Perfect on {100}, imperfect on {001}
Imperfect, poor one {100}
Mohs Hardness
2.54.5-5
2
10
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Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references