Foitite and Bustamite Physical Properties

Foitite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.173.32-3.43

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

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

1.6 Cleavage

None

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

1.7 Mohs Hardness

75.5-6

2 10

1.8 Chemical Composition

Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)

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

Foitite and Bustamite Chemical Formula

While comparing Foitite 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 Foitite and Bustamite chemical formula.

Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Violet Gemstones

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Foitite Vs Hydrogrossular

Foitite Vs Labradorite

Foitite and Bustamite Specific Gravity

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