Pezzottaite and Covellite Physical Properties

Pezzottaite

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

2.90-3.144.6-4.76

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

Imperfect; basal

Perfect on {0001}

1.7 Mohs Hardness

7.5-8Not Available

2 10

1.8 Chemical Composition

(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

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

Pezzottaite and Covellite Chemical Formula

While comparing Pezzottaite 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 Pezzottaite and Covellite chemical formula.

Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Pezzottaite and Covellite Specific Gravity

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