Phenakite and Nepheline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-2.98
2.55-2.65
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
[1010] Poor
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Phenakite and Nepheline Chemical Formula
While comparing Phenakite 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 Phenakite and Nepheline chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
Phenakite and Nepheline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.