Kyanite and Tantalite Physical Properties

Kyanite

Tantalite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.655.2

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Good in one direction

1.7 Mohs Hardness

4-76-6.5

2 10

1.8 Chemical Composition

Not Available

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

Kyanite and Tantalite Chemical Formula

While comparing Kyanite and Tantalite 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 Tantalite chemical formula.

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

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Kyanite and Tantalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 5.2 whereas that of Tantalite is 5.2.