Wulfenite and Pyrite Physical Properties

Wulfenite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

6.50-7.005.00-5.20

1 7.18

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Fracture

Irregular, Conchoidal

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

On {011}, distinct; on {001}, {013}, indistinct

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

Mohs Hardness

36-6.5

2 10

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Chemical Composition

PbMoO 4Walter Schumann , Gemstones of the world (2001)

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

Wulfenite and Pyrite Chemical Formula

While comparing Wulfenite 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 Wulfenite and Pyrite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Wulfenite and Pyrite Specific Gravity

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