Covellite and Annabergite Physical Properties
Tenacity
Flexible
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
3.07
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Cleavage
Perfect on {0001}
Perfect on {010}, indistinct on {100} and {102}
Mohs Hardness
Not Available
2
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ni3(AsO4)2•8(H2O)
Covellite and Annabergite Chemical Formula
While comparing Covellite and Annabergite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Covellite and Annabergite chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Covellite and Annabergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 3.07 whereas that of Annabergite is 3.07.