Tenacity
-
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
6.46-6.575.85-6.15
1
7.18
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Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Conchoidal
Cleavage
Good [110] and [021]
Fair in four directions forming octahedrons
Mohs Hardness
3-3.53.5-4
2
10
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Chemical Composition
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references