Tenacity
-
Brittle
Solubility
insoluble
Easily soluble in cold dilute HCl
Durability
-
-
Specific Gravity
6.46-6.574.12
1
7.18
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Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven
Cleavage
Good [110] and [021]
Good in two directions parallel to the prism faces {110}
Mohs Hardness
3-3.54-4.5
2
10
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Chemical Composition
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)