Pyrite and Spinel Physical Properties
Tenacity
Brittle
Not Available
Solubility
insoluble in water
none
Durability
Not Available
Not Available
Specific Gravity
5.00-5.20
3.64-3.66
Fracture
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indistinct on {001}; partings on {011} and {111}
None, but may exhibit slight parting
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Pyrite and Spinel Chemical Formula
While comparing Pyrite and Spinel 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 Pyrite and Spinel chemical formula.
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Spinel- MgAl2O4
Pyrite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.