Phenakite and Cryolite Physical Properties

Phenakite

Cryolite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

2.90-2.982.97

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Uneven

Cleavage

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

None observed

Mohs Hardness

7.5-82.5

2 10

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Chemical Composition

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

Na 3AlF 6Ulrich Henn and Claudio C.

Phenakite and Cryolite Chemical Formula

While comparing Phenakite and Cryolite 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 Cryolite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.

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Phenakite and Cryolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.97 whereas that of Cryolite is 2.97.