Sulfur and Foitite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
3.17
  
Fracture
(e.g. graphite).
  
Handbook of mineralogy (2001)
  
Cleavage
{???} Imperfect, {???} Imperfect
  
None
  
Mohs Hardness
Not Available
  
7
  
Chemical Composition
Not Available
  
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Sulfur and Foitite Chemical Formula
While comparing Sulfur and Foitite 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 Sulfur and Foitite chemical formula.
>- Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Sulfur and Foitite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sulfur and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sulfur and Foitite Optical Properties during the identification of gemstone. Specific gravity of Sulfur is 3.17 whereas that of Foitite is 3.17.