Iolite and Pyrophyllite Physical Properties

Iolite

Pyrophyllite

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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

2.6-2.72.65-2.90

1 7.18

1.5 Fracture

Not Available

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

3,1

{001} Perfect

1.7 Mohs Hardness

7-7.5Not Available

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Pyrophyllite Chemical Formula

While comparing Iolite 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 Iolite and Pyrophyllite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Pyrophyllite Specific Gravity

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