Pyrite and Scheelite Physical Properties

Pyrite

Scheelite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

5.00-5.205.9-6.3

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

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

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

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

CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyrite and Scheelite Chemical Formula

While comparing Pyrite and Scheelite 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 Scheelite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyrite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.