Apophyllite and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.30-2.50
3.06
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
Perfect on (001)
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
4.5-5
Not Available
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Co3(AsO4)2•8(H2O)
Apophyllite and Erythrite Chemical Formula
While comparing Apophyllite 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 Apophyllite and Erythrite chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Apophyllite and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 3.06 whereas that of Erythrite is 3.06.