Pyrite and Forsterite Physical Properties
Solubility
insoluble in water
-
Specific Gravity
5.00-5.20
3.23-3.26
Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Conchoidal
Cleavage
Indistinct on {001}; partings on {011} and {111}
Perfect on {010} imperfect on {100}
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyrite and Forsterite Chemical Formula
While comparing Pyrite and Forsterite 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 Forsterite chemical formula.
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyrite and Forsterite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.