Cordierite and Axinite Physical Properties

Cordierite

Axinite

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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

2.57-2.663.26-3.36

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 on {100}

1.7 Mohs Hardness

7-7.56.5-7

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Cordierite and Axinite Chemical Formula

While comparing Cordierite and Axinite 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 Axinite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Cordierite and Axinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Axinite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.26-3.36 whereas that of Axinite is 3.26-3.36.