Erythrite and Fayalite Physical Properties
Tenacity
Sectile
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06
4.392
Fracture
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Perfect on {010}; poor on {100} and { 1 02}.
{010} moderate, {100} imperfect
Mohs Hardness
Not Available
6.5-7
Chemical Composition
Co3(AsO4)2•8(H2O)
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Erythrite and Fayalite Chemical Formula
While comparing Erythrite 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 Erythrite and Fayalite chemical formula.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Erythrite and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Erythrite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 4.392 whereas that of Fayalite is 4.392.