1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.4 Durability
Not Available
Not Available
1.6 Specific Gravity
1.11 Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
1.12 Cleavage
Distinct on {100} and {110}
Distinct on {001} and {110}, indistinct on {100}
1.13 Mohs Hardness
1.14 Chemical Composition
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Pb 2(CO 3)Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references