Pyrite and Augelite Physical Properties

Pyrite

Augelite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

5.00-5.202.70-2.75

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

From the Greek for luster, for its pearly luster on the cleavage.

Mohs Hardness

6-6.54.5-5

2 10

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Chemical Composition

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

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Pyrite and Augelite Chemical Formula

While comparing Pyrite and Augelite 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 Pyrite and Augelite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Pyrite and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Augelite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 2.70-2.75 whereas that of Augelite is 2.70-2.75.