Chromite and Vivianite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.5-4.8
  
2.64-2.70
  
Fracture
Uneven
  
(e.g. graphite).
  
Cleavage
None, parting may develop along {111}
  
{010} Perfect
  
Mohs Hardness
5.5
  
Not Available
  
Chemical Composition
Fe++Cr2O4
  
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
  
Chromite and Vivianite Chemical Formula
While comparing Chromite and Vivianite 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 Chromite and Vivianite chemical formula.
- Chemical formula of Chromite- Fe++Cr2O4
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chromite and Vivianite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chromite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.