Bustamite and Chromite Physical Properties

Bustamite

Chromite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.434.5-4.8

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven

1.6 Cleavage

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

None, parting may develop along {111}

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

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

Fe++Cr2O4

Bustamite and Chromite Chemical Formula

While comparing Bustamite and Chromite 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 Chromite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Chromite- Fe++Cr2O4

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Bustamite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.