Foitite and Friedelite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.17
  
3.06-3.19
  
Fracture
Handbook of mineralogy (2001)
  
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
  
Cleavage
None
  
{010} Perfect
  
Mohs Hardness
7
  
4-5
  
Chemical Composition
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
  
Foitite and Friedelite Chemical Formula
While comparing Foitite and Friedelite 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 Foitite and Friedelite 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)
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Foitite and Friedelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Foitite and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Foitite and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Foitite is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.