Bornite and Pyrite Physical Properties

Bornite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

5.06-5.085.00-5.20

1 7.18

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Fracture

Uneven, Subconchoidal, Conchoidal

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

Poor on [111].

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

Mohs Hardness

3-3.256-6.5

2 10

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Chemical Composition

Cu5FeS4

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

Bornite and Pyrite Chemical Formula

While comparing Bornite 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 Bornite and Pyrite chemical formula.

Chemical formula of Bornite- Cu5FeS4
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bornite and Pyrite Specific Gravity

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