Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
2.27-2.33
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on { 2 01} fair on {010}
Not Available
Mohs Hardness
3.5-4
5.5-6
Chemical Composition
Cu2CO3(OH)2
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
