Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.352.82
1
7.18
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Fracture
Conchoidal
-
Cleavage
Perfect on {100}, imperfect on {001}
Perfect in one direction, indistinct in one direction
Mohs Hardness
2.56
2
10
👆🏻
Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]