Covellite and Poudretteite Physical Properties
Tenacity
Flexible
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
2.51-2.53
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, Splintery
Cleavage
Perfect on {0001}
None
Mohs Hardness
Not Available
5
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Covellite and Poudretteite Chemical Formula
While comparing Covellite and Poudretteite 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 Poudretteite chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Covellite and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.