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