Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.352.78
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
Perfect on {100}, imperfect on {001}
{???} Distinct, {???} Indistinct
Mohs Hardness
2.55-6
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)