Bertrandite and Pyrite Physical Properties

Bertrandite

Pyrite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

2.59-2.605.00-5.20

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

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

Mohs Hardness

6-76-6.5

2 10

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Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Bertrandite and Pyrite Chemical Formula

While comparing Bertrandite 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 Bertrandite and Pyrite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bertrandite and Pyrite Specific Gravity

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