Riebeckite and Chromite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.28-3.44
  
4.5-4.8
  
Fracture
Uneven, Splintery, Brittle
  
Uneven
  
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
  
None, parting may develop along {111}
  
Mohs Hardness
5.0-6.0
  
5.5
  
Chemical Composition
Not Available
  
Fe++Cr2O4
  
Riebeckite and Chromite Chemical Formula
While comparing Riebeckite and Chromite 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 Riebeckite and Chromite chemical formula.
>- Chemical formula of Chromite- Fe++Cr2O4
Riebeckite and Chromite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riebeckite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.