Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.00-4.625.35
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
Indistinct parting on [111]
Perfect on {100}, imperfect on {001}
Mohs Hardness
7.5-82.5
2
10
👆🏻
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)