Tenacity
-
Brittle
Solubility
-
insoluble in water
Durability
-
-
Specific Gravity
5.055.00-5.20
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal, ConchoidalWalter Schumann
Cleavage
[001] perfect
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
3-3.56-6.5
2
10
👆🏻
Chemical Composition
Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references