Feldspar and Sellaite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.56-2.75
  
3.14-3.16
  
Fracture
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)
  
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Cleavage
two or three
  
Perfect on {010} and {110}
  
Mohs Hardness
6-6.5
  
5-5.5
  
Chemical Composition
Not Available
  
MgF 2Ulrich Henn and Claudio C.
  
Feldspar and Sellaite Chemical Formula
While comparing Feldspar and Sellaite 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 Feldspar and Sellaite chemical formula.
>- Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Feldspar and Sellaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Feldspar and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.