1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Readily soluble in water
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Uneven, Conchoidal, Brittle
2.6 Cleavage
Perfect on {100}, imperfect on {001}
Good on {0001}
2.7 Mohs Hardness
2.11 Chemical Composition
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
KNa22(SO4)9(CO3)2Cl