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Cordierite
Cordierite

Milarite
Milarite



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Cordierite
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Milarite

Cordierite and Milarite 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
 
-
-
-
2.52-2.60
Uneven, Conchoidal
{0001} Imperfect, {1120} Imperfect
5.5-6
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Milarite Chemical Formula

While comparing Cordierite and Milarite 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 Milarite chemical formula.

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Cordierite and Milarite Specific Gravity

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