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Pyrophyllite
Pyrophyllite

Covellite
Covellite



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Pyrophyllite
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Covellite

Pyrophyllite and Covellite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Flexible
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.65-2.904.6-4.76
Amber
1 7.18
1.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
1.6 Cleavage
{001} Perfect
Perfect on {0001}
1.7 Mohs Hardness
Not AvailableNot Available
Amber
2 10
1.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Pyrophyllite and Covellite Chemical Formula

While comparing Pyrophyllite 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 Pyrophyllite and Covellite chemical formula.

  • Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Covellite- CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references

Pyrophyllite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.