Pyrite and Erythrite Physical Properties

Pyrite

Erythrite

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Physical Properties

Tenacity

Brittle

Sectile

Solubility

insoluble in water

Durability

Specific Gravity

5.00-5.203.06

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Sectile

Cleavage

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

Perfect on {010}; poor on {100} and { 1 02}.

Mohs Hardness

6-6.5-9999

2 10

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Chemical Composition

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

Co3(AsO4)2•8(H2O)

Pyrite and Erythrite Chemical Formula

While comparing Pyrite and Erythrite 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 Erythrite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Pyrite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.06 whereas that of Erythrite is 3.06.