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Cordierite
Cordierite

Almandine
Almandine



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Cordierite
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Almandine

Cordierite and Almandine 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
 
-
-
-
3.95-4.30
Conchoidal
none
7-7.5
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Cordierite and Almandine Chemical Formula

While comparing Cordierite and Almandine 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 Almandine chemical formula.

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Cordierite and Almandine Specific Gravity

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