Bertrandite and Covellite Physical Properties

Bertrandite

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

2.59-2.604.6-4.76

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

Perfect on {0001}

1.7 Mohs Hardness

6-7Not Available

2 10

1.8 Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Bertrandite and Covellite Chemical Formula

While comparing Bertrandite 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 Bertrandite and Covellite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Bertrandite and Covellite Specific Gravity

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