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Cordierite and Dumortierite Physical Properties


Dumortierite and Cordierite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.57-2.66   
3.26-3.41   

Fracture
Subconchoidal, Conchoidal, Brittle   
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   

Cleavage
Fair on {100}, poor on {001} and {010}   
Distinct on {100}, poor on {110}; parting on {001}   

Mohs Hardness
7-7.5   
7-8.5   

Chemical Composition
Mg2Al4Si5O18   
AlAl6O3BSi3O18   

Optical Properties >>
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Cordierite and Dumortierite Chemical Formula

While comparing Cordierite and Dumortierite 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 Dumortierite chemical formula.

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Cordierite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.

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