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Sodalite
Sodalite

Cordierite
Cordierite



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Sodalite
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Cordierite

Sodalite and Cordierite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.15-2.40
2.57-2.66
1.5 Fracture
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
Subconchoidal, Conchoidal, Brittle
1.6 Cleavage
Poor on {110}
Fair on {100}, poor on {001} and {010}
1.7 Mohs Hardness
5-6
7-7.5
1.8 Chemical Composition
Na8Al6Si6O24Cl2
Mg2Al4Si5O18

Sodalite and Cordierite Chemical Formula

While comparing Sodalite and Cordierite 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 Cordierite chemical formula.

  • Chemical formula of Sodalite- Na8Al6Si6O24Cl2
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Sodalite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sodalite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.