Nepheline and Gypsum Physical Properties
Tenacity
Not Available
Flexible
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
2.20-2.40
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Cleavage
[1010] Poor
Perfect on {010}, distinct on {100}
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Nepheline and Gypsum Chemical Formula
While comparing Nepheline and Gypsum 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 Gypsum chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Nepheline and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.