Nepheline and Erythrite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
3.06
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
[1010] Poor
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
5-6
Not Available
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Co3(AsO4)2•8(H2O)
Nepheline and Erythrite Chemical Formula
While comparing Nepheline 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 Nepheline and Erythrite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Nepheline and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.06 whereas that of Erythrite is 3.06.