Anhydrite and Prehnite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
2.80-2.95
Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Distinct on [001]
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca2Al2Si3O12(OH)
Anhydrite and Prehnite Chemical Formula
While comparing Anhydrite and Prehnite 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 Anhydrite and Prehnite chemical formula.
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Anhydrite and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anhydrite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.