Pyrargyrite and Covellite Physical Properties

Pyrargyrite

Covellite

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.854.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

Distinct on {10 1 1}, imperfect on {01 1 2}

Perfect on {0001}

1.7 Mohs Hardness

2.5-3Not Available

2 10

1.8 Chemical Composition

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Pyrargyrite and Covellite Chemical Formula

While comparing Pyrargyrite 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 Pyrargyrite and Covellite chemical formula.

Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Pyrargyrite and Covellite Specific Gravity

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