Prehnite and Covellite Physical Properties
Tenacity
Brittle
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
4.6-4.76
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Distinct on [001]
Perfect on {0001}
Mohs Hardness
6-6.5
Not Available
Chemical Composition
Ca2Al2Si3O12(OH)
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Prehnite and Covellite Chemical Formula
While comparing Prehnite 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 Prehnite and Covellite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Prehnite and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.