Bustamite and Hematite Physical Properties

Bustamite

Hematite

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Physical Properties

Tenacity

Brittle

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

3.32-3.435.00-5.30

1 7.18

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Fracture

Conchoidal

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

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

None, may show partings on {0001} and {10 1 1}

Mohs Hardness

5.5-66

2 10

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Chemical Composition

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

Fe 2O 3Arthur Thomas , Gemstones (2009)

Bustamite and Hematite Chemical Formula

While comparing Bustamite and Hematite 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 Bustamite and Hematite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Bustamite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.