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Nepheline
Nepheline

Neptunite
Neptunite



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Nepheline
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Neptunite

Nepheline and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.65
Subconchoidal, Conchoidal
[1010] Poor
5-6
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Nepheline and Neptunite Chemical Formula

While comparing Nepheline and Neptunite 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 Neptunite chemical formula.

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Nepheline and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nepheline and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline Vs Neptunite during the identification of gemstone. Specific gravity of Nepheline is whereas that of Neptunite is .