Legrandite and Pyrite Physical Properties

Legrandite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

3.98-4.045.00-5.20

1 7.18

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Fracture

Conchoidal

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

Imperfect, poor one {100}

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

Mohs Hardness

4.5-56-6.5

2 10

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Chemical Composition

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

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

Legrandite and Pyrite Chemical Formula

While comparing Legrandite 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 Legrandite and Pyrite chemical formula.

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

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Legrandite and Pyrite Specific Gravity

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