Nepheline and Esperite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
4.28-4.42
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
[1010] Poor
Distinct on [010] and [100] poor on [101]
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Nepheline and Esperite Chemical Formula
While comparing Nepheline and Esperite 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 Esperite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Nepheline and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Esperite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 4.28-4.42 whereas that of Esperite is 4.28-4.42.