Anhydrite and Pyrrhotite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
4.58-4.65
Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Absent
Mohs Hardness
3.5
3.5-4.5
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Not Available
Anhydrite and Pyrrhotite Chemical Formula
While comparing Anhydrite and Pyrrhotite 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 Pyrrhotite chemical formula.
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
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Anhydrite and Pyrrhotite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anhydrite and Pyrrhotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Pyrrhotite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 4.58-4.65 whereas that of Pyrrhotite is 4.58-4.65.