Anorthite and Gypsum Physical Properties
Tenacity
Brittle
Flexible
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.77
2.20-2.40
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect [001] good [010] poor [110]
Perfect on {010}, distinct on {100}
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Anorthite and Gypsum Chemical Formula
While comparing Anorthite and Gypsum 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 Gypsum chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Anorthite and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.