Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.352.55-2.63
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Perfect on {100}, imperfect on {001}
{001} Perfect, {010} Good
Mohs Hardness
2.56-6.5
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
KAlSi 3O 8Arthur Thomas , Gemstones (2009)