Tenacity
-
-
Solubility
-
Soluble
Durability
-
-
Specific Gravity
5.353.06-3.25
1
7.18
👆🏻
Fracture
Conchoidal
Sub-Conchoidal, Conchoidal, Uneven
Cleavage
Perfect on {100}, imperfect on {001}
Poor/indistinct on {100}
Mohs Hardness
2.54.5-5
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)