Pyrite and Herderite Physical Properties
Solubility
insoluble in water
-
Specific Gravity
5.00-5.20
2.90-3.02
Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
Indistinct on {001}; partings on {011} and {111}
Indistinct on {110}
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Pyrite and Herderite Chemical Formula
While comparing Pyrite and Herderite 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 Herderite chemical formula.
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Pyrite and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.