1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Gems, Sixth Edition (2006)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
1.6 Cleavage
Indiscernible
Perfect on {100}, imperfect on {001}
1.7 Mohs Hardness
1.8 Chemical Composition
Quartz: SiO2 Rutile: TiO2
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)