Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.50
4.43-4.46
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {100} and {110}
Not Available
Mohs Hardness
5.5-6
3-3.5
Chemical Composition
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
BaSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
