Pyrophyllite and Fayalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
4.392
Fracture
Gemstones (2009), Flexible Flexible fragments.
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
{001} Perfect
{010} moderate, {100} imperfect
Mohs Hardness
Not Available
6.5-7
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyrophyllite and Fayalite Chemical Formula
While comparing Pyrophyllite and Fayalite 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 Fayalite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Pyrophyllite and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.392 whereas that of Fayalite is 4.392.