Phenakite and Tantalite Physical Properties

Phenakite

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

2.90-2.985.2

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Distinct on {11 2 0}, imperfect on {10 1 1}

Good in one direction

1.7 Mohs Hardness

7.5-86-6.5

2 10

1.8 Chemical Composition

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Phenakite and Tantalite Chemical Formula

While comparing Phenakite 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 Phenakite and Tantalite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael 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

Compare Colorless Gems

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Phenakite and Tantalite Specific Gravity

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