Tantalite and Bustamite Physical Properties

Tantalite

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

5.23.32-3.43

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Good in one direction

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

1.7 Mohs Hardness

6-6.55.5-6

2 10

1.8 Chemical Composition

(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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

Tantalite and Bustamite Chemical Formula

While comparing Tantalite 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 Tantalite and Bustamite chemical formula.

Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Tantalite and Bustamite Specific Gravity

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