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Cordierite
Cordierite

Kyanite
Kyanite



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Cordierite
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Kyanite

Cordierite and Kyanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5

Cordierite and Kyanite Chemical Formula

While comparing Cordierite and Kyanite 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 Kyanite chemical formula.

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Cordierite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Vs Kyanite during the identification of gemstone. Specific gravity of Cordierite is whereas that of Kyanite is .