Pyrite and Bustamite Physical Properties

Pyrite

Bustamite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Partly soluble in HCl.

Durability

Specific Gravity

5.00-5.203.32-3.43

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

6-6.55.5-6

2 10

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Chemical Composition

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

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyrite and Bustamite Chemical Formula

While comparing Pyrite and Bustamite 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 Bustamite chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyrite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.