Kyanite and Bustamite Physical Properties

Kyanite

Bustamite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.653.32-3.43

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

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

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

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

1.7 Mohs Hardness

4-75.5-6

2 10

1.8 Chemical Composition

Not Available

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

Kyanite and Bustamite Chemical Formula

While comparing Kyanite 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 Kyanite and Bustamite chemical formula.

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

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Kyanite and Bustamite Specific Gravity

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