Bustamite and Axinite Physical Properties

Bustamite

Axinite

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Physical Properties

Tenacity

Solubility

Partly soluble in HCl.

Durability

Specific Gravity

3.32-3.433.26-3.36

1 7.18

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Fracture

Conchoidal

Cleavage

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

Good on {100}

Mohs Hardness

5.5-66.5-7

2 10

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Chemical Composition

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

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Bustamite and Axinite Chemical Formula

While comparing Bustamite and Axinite 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 Axinite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Bustamite and Axinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Axinite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.26-3.36 whereas that of Axinite is 3.26-3.36.