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Cordierite
Cordierite

Hackmanite
Hackmanite



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Cordierite
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Hackmanite

Cordierite and Hackmanite 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
 
-
-
-
2.27-2.33
-
Perfect
5.5-6
Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Cordierite and Hackmanite Chemical Formula

While comparing Cordierite and Hackmanite 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 Hackmanite chemical formula.

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Cordierite and Hackmanite Specific Gravity

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