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Cordierite
Cordierite

Sanidine
Sanidine



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Cordierite
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Sanidine

Cordierite and Sanidine 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
 
-
-
-
2.54-2.61
Uneven
{001} Perfect, {010} Good
6
KAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Cordierite and Sanidine Chemical Formula

While comparing Cordierite and Sanidine 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 Sanidine chemical formula.

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Cordierite and Sanidine Specific Gravity

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