Cassiterite and Tantalite Physical Properties

Cassiterite

Tantalite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.86-7.035.2

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{100} imperfect, {110} indistinct; partings on {111} or {011}

Good in one direction

1.7 Mohs Hardness

6-76-6.5

2 10

1.8 Chemical Composition

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Cassiterite and Tantalite Chemical Formula

While comparing Cassiterite 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 Cassiterite and Tantalite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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Cassiterite and Tantalite Specific Gravity

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