Purpurite and Covellite Physical Properties

Purpurite

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

3.2-3.44.6-4.76

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

[100] [001] perfect

Perfect on {0001}

1.7 Mohs Hardness

4-4.5Not Available

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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

Purpurite and Covellite Chemical Formula

While comparing Purpurite 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 Purpurite and Covellite chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Purpurite and Covellite Specific Gravity

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