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Dumortierite and Foitite Physical Properties


Foitite and Dumortierite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.26-3.41   
3.17   

Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   
Handbook of mineralogy (2001)   

Cleavage
Distinct on {100}, poor on {110}; parting on {001}   
None   

Mohs Hardness
7-8.5   
7   

Chemical Composition
AlAl6O3BSi3O18   
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Dumortierite and Foitite Chemical Formula

While comparing Dumortierite and Foitite 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 Dumortierite and Foitite chemical formula.

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Dumortierite and Foitite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Foitite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.17 whereas that of Foitite is 3.17.

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