Nepheline and Tantalite Physical Properties

Nepheline

Tantalite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.655.2

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[1010] Poor

Good in one direction

1.7 Mohs Hardness

5-66-6.5

2 10

1.8 Chemical Composition

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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

Nepheline and Tantalite Chemical Formula

While comparing Nepheline 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 Nepheline and Tantalite chemical formula.

Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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Nepheline and Tantalite Specific Gravity

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