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Cordierite
Cordierite

Brucite
Brucite



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Cordierite
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Brucite

Cordierite and Brucite 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
 
Sectile
-
-
2.39
Irregular
Perfect on {0001}
2.5
Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Cordierite and Brucite Chemical Formula

While comparing Cordierite and Brucite 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 Brucite chemical formula.

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Cordierite and Brucite Specific Gravity

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