Chromite and Covellite Physical Properties

Chromite

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

4.5-4.84.6-4.76

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

None, parting may develop along {111}

Perfect on {0001}

1.7 Mohs Hardness

5.5Not Available

2 10

1.8 Chemical Composition

Fe++Cr2O4

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

Chromite and Covellite Chemical Formula

While comparing Chromite 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 Chromite and Covellite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Chromite and Covellite Specific Gravity

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