1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.1 Solubility
Not Available
Not Available
1.4 Durability
Not Available
Not Available
1.6 Specific Gravity
3.80-4.151.98-2.50
1
7.18
1.16 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001)
1.17 Cleavage
perfect along [010] and [100]
Not Available
1.18 Mohs Hardness
1.19 Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)