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Cordierite
Cordierite

Nepheline
Nepheline



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Cordierite
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Nepheline

Cordierite and Nepheline Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.57-2.662.55-2.65
Amber
1 7.18
1.5 Fracture
Subconchoidal, Conchoidal, Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
Fair on {100}, poor on {001} and {010}
[1010] Poor
1.7 Mohs Hardness
7-7.55-6
Amber
2 10
1.8 Chemical Composition
Mg2Al4Si5O18
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Cordierite and Nepheline Chemical Formula

While comparing Cordierite and Nepheline 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 Nepheline chemical formula.

  • Chemical formula of Cordierite- Mg2Al4Si5O18
  • Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Cordierite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.