Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.6-5.763.19-3.56
1
7.18
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Fracture
Uneven
Uneven, Conchoidal
Cleavage
[001] perfect; [100] distinct
{110} Perfect, {010} Indistinct
Mohs Hardness
2.5-35.5-6
2
10
👆🏻
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)