Erythrite and Covellite Physical Properties
Tenacity
Sectile
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06
4.6-4.76
Fracture
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Perfect on {010}; poor on {100} and { 1 02}.
Perfect on {0001}
Mohs Hardness
Not Available
Not Available
Chemical Composition
Co3(AsO4)2•8(H2O)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Erythrite and Covellite Chemical Formula
While comparing Erythrite and Covellite 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 Erythrite and Covellite chemical formula.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Erythrite and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Erythrite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.