Prehnite and Nepheline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.55-2.65
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Distinct on [001]
[1010] Poor
Chemical Composition
Ca2Al2Si3O12(OH)
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Prehnite and Nepheline Chemical Formula
While comparing Prehnite and Nepheline 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 Prehnite and Nepheline chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Prehnite and Nepheline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.