Pyrite and Pollucite Physical Properties

Pyrite

Pollucite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Readily soluble in HF

Durability

Specific Gravity

5.00-5.202.86-2.94

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

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

None observed

Mohs Hardness

6-6.56.5-7

2 10

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Chemical Composition

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

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Pyrite and Pollucite Chemical Formula

While comparing Pyrite and Pollucite 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 Pollucite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Pyrite and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.