Nepheline and Grandidierite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
2.85-3.00
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
[1010] Poor
Perfect
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Nepheline and Grandidierite Chemical Formula
While comparing Nepheline and Grandidierite 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 Grandidierite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Nepheline and Grandidierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.