Anhydrite and Pyrite Physical Properties
Solubility
Not Available
insoluble in water
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
5.00-5.20
Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Indistinct on {001}; partings on {011} and {111}
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Anhydrite and Pyrite Chemical Formula
While comparing Anhydrite and Pyrite 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 Pyrite chemical formula.
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Anhydrite and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anhydrite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.