Pyrite and Legrandite Physical Properties

Pyrite

Legrandite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

5.00-5.203.98-4.04

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

Imperfect, poor one {100}

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

Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyrite and Legrandite Chemical Formula

While comparing Pyrite and Legrandite 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 Legrandite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyrite and Legrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.