Tantalite and Elbaite Physical Properties

Tantalite

Elbaite

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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

5.22.90-3.10

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Good in one direction

Poor/indistinct on {1120} and {1011}

1.7 Mohs Hardness

6-6.57

2 10

1.8 Chemical Composition

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

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Tantalite and Elbaite Chemical Formula

While comparing Tantalite and Elbaite 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 Elbaite chemical formula.

Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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Tantalite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tantalite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tantalite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Tantalite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.