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Brookite and Cordierite Physical Properties


Cordierite and Brookite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.87-4.14   
2.57-2.66   

Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   
Subconchoidal, Conchoidal, Brittle   

Cleavage
Poor on {120}, in traces on {001}   
Fair on {100}, poor on {001} and {010}   

Mohs Hardness
5.5-6   
7-7.5   

Chemical Composition
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Mg2Al4Si5O18   

Optical Properties >>
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Brookite and Cordierite Chemical Formula

While comparing Brookite and Cordierite 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 Brookite and Cordierite chemical formula.

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Brookite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.

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