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Cordierite and Spodumene Physical Properties


Spodumene and Cordierite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.57-2.66   
3.15-3.21   

Fracture
Subconchoidal, Conchoidal, Brittle   
Uneven, Subconchoidal, Gemstones (2009)   

Cleavage
Fair on {100}, poor on {001} and {010}   
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°   

Mohs Hardness
7-7.5   
6-7   

Chemical Composition
Mg2Al4Si5O18   
LiAlSi2O6   

Optical Properties >>
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Cordierite and Spodumene Chemical Formula

While comparing Cordierite and Spodumene 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 Spodumene chemical formula.

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Cordierite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.

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