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Cordierite
Cordierite

Austinite
Austinite



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Cordierite
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Austinite

Cordierite and Austinite 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
 
Brittle
Easily soluble in cold dilute HCl
-
4.12
Uneven
Good in two directions parallel to the prism faces {110}
4-4.5
CaZn(AsO4)(OH)

Cordierite and Austinite Chemical Formula

While comparing Cordierite and Austinite 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 Austinite chemical formula.

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Cordierite and Austinite Specific Gravity

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