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Cordierite
Cordierite

Steatite
Steatite



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Cordierite
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Steatite

Cordierite and Steatite 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
 
-
-
-
2.20-2.80
-
Perfect
-9999
Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

Cordierite and Steatite Chemical Formula

While comparing Cordierite and Steatite 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 Steatite chemical formula.

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Cordierite and Steatite Specific Gravity

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