Cordierite and Charoite Physical Properties

Cordierite

Charoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.662.54-2.78

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Good in three directions

1.7 Mohs Hardness

7-7.55-6

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Charoite Chemical Formula

While comparing Cordierite and Charoite 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 Charoite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cordierite and Charoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Charoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Charoite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.54-2.78 whereas that of Charoite is 2.54-2.78.