Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.352.74-2.76
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Perfect on {100}, imperfect on {001}
{010} Perfect, {001} Distinct
Mohs Hardness
2.53.5-4
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)