Pyrophyllite and Sodalite Physical Properties

Pyrophyllite

Sodalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.902.15-2.40

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

Conchoidal, Uneven, UnevenArthur Thomas, Brittle

1.6 Cleavage

{001} Perfect

Poor on {110}

1.7 Mohs Hardness

Not Available5-6

2 10

1.8 Chemical Composition

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

Na₈Al₆Si₆O₂₄Cl₂

Pyrophyllite and Sodalite Chemical Formula

While comparing Pyrophyllite and Sodalite 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 Sodalite chemical formula.

Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Sodalite- Na₈Al₆Si₆O₂₄Cl₂

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Pyrophyllite and Sodalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.