Pyromorphite and Pyrite Physical Properties

Pyromorphite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

6.5-7.15.00-5.20

1 7.18

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Fracture

Uneven, Conchoidal

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

Imperfect- [10 1 1]

Indistinct on {001}; partings on {011} and {111}

Mohs Hardness

3.5-46-6.5

2 10

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Chemical Composition

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

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyromorphite and Pyrite Chemical Formula

While comparing Pyromorphite and Pyrite 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 Pyrite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyromorphite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.