Pyromorphite and Covellite Physical Properties

Pyromorphite

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

6.5-7.14.6-4.76

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

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

1.6 Cleavage

Imperfect- [10 1 1]

Perfect on {0001}

1.7 Mohs Hardness

3.5-4Not Available

2 10

1.8 Chemical Composition

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

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

Pyromorphite and Covellite Chemical Formula

While comparing Pyromorphite 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 Pyromorphite and Covellite chemical formula.

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

Compare Green Gemstones

Pyromorphite Vs Sapphirine

Pyromorphite Vs Sapphire

Pyromorphite Vs Rutilated Quartz

Pyromorphite and Covellite Specific Gravity

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