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Dumortierite
Dumortierite

Anhydrite
Anhydrite



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Dumortierite
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Anhydrite

Dumortierite and Anhydrite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.26-3.41
Fibrous, ConchoidalWalter Schumann
Distinct on {100}, poor on {110}; parting on {001}
7-8.5
AlAl6O3BSi3O18
 
Brittle
-
-
2.90-2.98
Conchoidal
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
3.5
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Dumortierite and Anhydrite Chemical Formula

While comparing Dumortierite and Anhydrite 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 Dumortierite and Anhydrite chemical formula.

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Dumortierite and Anhydrite Specific Gravity

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