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Dumortierite
Dumortierite

Anhydrite
Anhydrite



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Dumortierite
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Anhydrite

Dumortierite and Anhydrite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.26-3.412.90-2.98
Amber
1 7.18
1.5 Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
1.7 Mohs Hardness
7-8.53.5
Amber
2 10
1.8 Chemical Composition
AlAl6O3BSi3O18
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.

  • Chemical formula of Dumortierite- AlAl6O3BSi3O18
  • Chemical formula of Anhydrite- CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

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 and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.