Pyrophyllite and Tantalite Physical Properties

Pyrophyllite

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

2.65-2.905.2

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Perfect

Good in one direction

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Al 2Si 4O 10(OH) 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

Pyrophyllite and Tantalite Chemical Formula

While comparing Pyrophyllite 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 Pyrophyllite and Tantalite chemical formula.

Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 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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Pyrophyllite and Tantalite Specific Gravity

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