Austinite and Covellite Physical Properties
Tenacity
Brittle
Flexible
Solubility
Easily soluble in cold dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.12
4.6-4.76
Fracture
Brittle, Uneven, Brittle, Uneven
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Good in two directions parallel to the prism faces {110}
Perfect on {0001}
Mohs Hardness
4-4.5
Not Available
Chemical Composition
CaZn(AsO4)(OH)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Austinite and Covellite Chemical Formula
While comparing Austinite 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 Austinite and Covellite chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Austinite and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.