Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.6-5.762.9-3.5
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
[001] perfect; [100] distinct
{110} Perfect, {???} Distinct, {???} Distinct
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)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)