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Nepheline
Nepheline

Gypsum
Gypsum



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Nepheline
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Gypsum

Nepheline and Gypsum Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Flexible
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.652.20-2.40
Amber
1 7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
[1010] Poor
Perfect on {010}, distinct on {100}
1.7 Mohs Hardness
5-62
Amber
2 10
1.8 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.