Cordierite and Muscovite Physical Properties

Cordierite

Muscovite

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1 Physical Properties

1.1 Tenacity

Brittle

Elastic

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.662.78-2.88

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Micaceous, Brittle

1.6 Cleavage

Fair on {100}, poor on {001} and {010}

Perfect on the {001}

1.7 Mohs Hardness

7-7.52-3

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Cordierite and Muscovite Chemical Formula

While comparing Cordierite and Muscovite 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 Cordierite and Muscovite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Muscovite- KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

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Cordierite and Muscovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Muscovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Muscovite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.78-2.88 whereas that of Muscovite is 2.78-2.88.