Erythrite and Andalusite Physical Properties
Tenacity
Sectile
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.06
3.05-3.21
Fracture
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {010}; poor on {100} and { 1 02}.
Good on {110}, poor on {100}
Mohs Hardness
Not Available
7.5
Chemical Composition
Co3(AsO4)2•8(H2O)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Erythrite and Andalusite Chemical Formula
While comparing Erythrite and Andalusite 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 Andalusite chemical formula.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Erythrite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Erythrite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.