Malachite and Pyrite Physical Properties

Malachite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

3.25-4.105.00-5.20

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

Perfect on { 2 01} fair on {010}

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

Mohs Hardness

3.5-46-6.5

2 10

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Chemical Composition

Cu₂CO₃(OH)₂

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

Malachite and Pyrite Chemical Formula

While comparing Malachite 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 Malachite and Pyrite chemical formula.

Chemical formula of Malachite- Cu₂CO₃(OH)₂
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Malachite and Pyrite Specific Gravity

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