Pyrophyllite and Covellite Physical Properties

Pyrophyllite

Covellite

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.904.6-4.76

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

2 10

1.8 Chemical Composition

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CuSMichael OâDonoghue , 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 OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Blue Gemstones

Pyrophyllite Vs Scorzalite

Pyrophyllite Vs Sard

Pyrophyllite Vs Sardonyx

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.