Covellite and Pyromorphite Physical Properties

Covellite

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Flexible

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.6-4.766.5-7.1

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

Perfect on {0001}

Imperfect- [10 1 1]

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

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

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Covellite and Pyromorphite Chemical Formula

While comparing Covellite and Pyromorphite 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 Covellite and Pyromorphite chemical formula.

Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Covellite and Pyromorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Pyromorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Pyromorphite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 6.5-7.1 whereas that of Pyromorphite is 6.5-7.1.