Pyrophyllite and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
3.06
Fracture
Gemstones (2009), Flexible Flexible fragments.
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
{001} Perfect
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
Not Available
Not Available
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Co3(AsO4)2•8(H2O)
Pyrophyllite and Erythrite Chemical Formula
While comparing Pyrophyllite and Erythrite 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 Erythrite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Pyrophyllite and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.06 whereas that of Erythrite is 3.06.