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Cordierite
Cordierite

Chalcedony
Chalcedony



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Cordierite
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Chalcedony

Cordierite and Chalcedony 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
 
-
Soluble
-
2.55-2.70
Uneven, Splintery, Conchoidal
Absent
6.5-7
SiO2

Cordierite and Chalcedony Chemical Formula

While comparing Cordierite and Chalcedony 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 Chalcedony chemical formula.

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Cordierite and Chalcedony Specific Gravity

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