Corundum and Anhydrite Physical Properties
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
2.90-2.98
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
None – parting in 3 directions
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Corundum and Anhydrite Chemical Formula
While comparing Corundum 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 Corundum and Anhydrite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Corundum and Anhydrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.