Covellite and Pyrophyllite Physical Properties
Tenacity
Flexible
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
2.65-2.90
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Gemstones (2009), Flexible Flexible fragments.
Cleavage
Perfect on {0001}
{001} Perfect
Mohs Hardness
Not Available
Not Available
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Covellite and Pyrophyllite Chemical Formula
While comparing Covellite and Pyrophyllite 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 Pyrophyllite chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Covellite and Pyrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.