Pyrophyllite and Cordierite Iolite Physical Properties

Pyrophyllite

Cordierite Iolite

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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

2.65-2.902.56-2.66

1 7.18

1.5 Fracture

Gemstones (2009), Flexible Flexible fragments.

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{001} Perfect

Not Available

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

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

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Pyrophyllite and Cordierite Iolite Chemical Formula

While comparing Pyrophyllite and Cordierite Iolite 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 Cordierite Iolite chemical formula.

Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Pyrophyllite Vs Scorzalite

Pyrophyllite Vs Sard

Pyrophyllite and Cordierite Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Cordierite Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Cordierite Iolite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.56-2.66 whereas that of Cordierite Iolite is 2.56-2.66.