Narsarsukite and Gypsum Physical Properties
Tenacity
Brittle
  
Flexible
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.72-2.83
  
2.20-2.40
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Good on {100} and {110}
  
Perfect on {010}, distinct on {100}
  
Mohs Hardness
6-7
  
2
  
Chemical Composition
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
  
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
  
Narsarsukite and Gypsum Chemical Formula
While comparing Narsarsukite 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 Narsarsukite and Gypsum chemical formula.
- Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Narsarsukite and Gypsum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Narsarsukite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Narsarsukite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Narsarsukite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.