Pyrite and Forsterite Physical Properties

Pyrite

Forsterite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

insoluble in water

5.00-5.20

Uneven, Conchoidal, ConchoidalWalter Schumann

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

6-6.5

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

3.23-3.26

Conchoidal

Perfect on {010} imperfect on {100}

6.5-7

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Pyrite and Forsterite Chemical Formula

While comparing Pyrite and Forsterite 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 Forsterite chemical formula.

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

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Pyrite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.