Bustamite and Kyanite Physical Properties

Bustamite

Kyanite

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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

3.32-3.433.53-3.65

1 7.18

1.5 Fracture

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

Splintery, Brittle, Metallic

1.6 Cleavage

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

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

1.7 Mohs Hardness

5.5-64-7

2 10

1.8 Chemical Composition

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

Not Available

Bustamite and Kyanite Chemical Formula

While comparing Bustamite and Kyanite 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 Kyanite chemical formula.

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

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Bustamite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.