Riebeckite and Tantalite Physical Properties

Riebeckite

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

3.28-3.445.2

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Good in one direction

1.7 Mohs Hardness

5.0-6.06-6.5

2 10

1.8 Chemical Composition

Not Available

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

Riebeckite and Tantalite Chemical Formula

While comparing Riebeckite 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 Riebeckite 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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Riebeckite and Tantalite Specific Gravity

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