Phenakite and Pyrophyllite Physical Properties

Phenakite

Pyrophyllite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.982.65-2.90

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Cleavage

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

{001} Perfect

Mohs Hardness

7.5-8-9999

2 10

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Chemical Composition

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

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Phenakite and Pyrophyllite Chemical Formula

While comparing Phenakite and Pyrophyllite 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 Pyrophyllite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Colorless Gems

Phenakite Vs Orthoclase

Phenakite Vs Oligoclase

Phenakite Vs Muscovite

Phenakite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.