Covellite and Afghanite Physical Properties
Tenacity
Flexible
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
2.55-2.65
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Cleavage
Perfect on {0001}
Perfect {10 1 0}
Mohs Hardness
Not Available
5.5-6
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Covellite and Afghanite Chemical Formula
While comparing Covellite and Afghanite 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 Afghanite chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Covellite and Afghanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.