Pyrophyllite and Pyrite Physical Properties
Solubility
-
insoluble in water
Specific Gravity
2.65-2.90
5.00-5.20
Fracture
-
Uneven, Conchoidal, ConchoidalWalter Schumann
Cleavage
{001} Perfect
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
-9999
6-6.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyrophyllite and Pyrite Chemical Formula
While comparing Pyrophyllite 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 Pyrophyllite and Pyrite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyrophyllite and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.