Friedelite and Pyrite Physical Properties

Friedelite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

3.06-3.195.00-5.20

1 7.18

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Fracture

Uneven

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

{010} Perfect

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

Mohs Hardness

4-56-6.5

2 10

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Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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

Friedelite and Pyrite Chemical Formula

While comparing Friedelite 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 Friedelite and Pyrite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Friedelite and Pyrite Specific Gravity

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