Tenacity
Brittle
-
Solubility
-
Partly soluble in HCl.
Durability
-
-
Specific Gravity
5.6-5.763.32-3.43
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
[001] perfect; [100] distinct
{100} perfect; {110} and {1 1 0} good; {010} poor
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,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references