Anorthite and Anhydrite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.77
2.90-2.98
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect [001] good [010] poor [110]
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Anorthite and Anhydrite Chemical Formula
While comparing Anorthite 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 Anorthite and Anhydrite chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Anorthite and Anhydrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.