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Cordierite
Cordierite

Bytownite
Bytownite



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Cordierite
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Bytownite

Cordierite and Bytownite 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
-
-
2.72-2.75
Uneven
Perfect on [001], good on [010], imperfect on [110]
6-6.5
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Cordierite and Bytownite Chemical Formula

While comparing Cordierite and Bytownite 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 Bytownite chemical formula.

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Cordierite and Bytownite Specific Gravity

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