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