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Sodalite and Ettringite Physical Properties


Ettringite and Sodalite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Partially soluble in water   

Durability
Not Available   
Not Available   

Specific Gravity
2.15-2.40   
1.77   

Fracture
Conchoidal, Uneven, UnevenArthur Thomas, Brittle   
Not Available   

Cleavage
Poor on {110}   
Perfect on {10 1 0}   

Mohs Hardness
5-6   
2-2.5   

Chemical Composition
Na8Al6Si6O24Cl2   
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Sodalite and Ettringite Chemical Formula

While comparing Sodalite and Ettringite 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 Sodalite and Ettringite chemical formula.

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Sodalite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 1.77 whereas that of Ettringite is 1.77.

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