Vivianite and Cryolite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.64-2.70
  
2.97
  
Fracture
(e.g. graphite).
  
Uneven
  
Cleavage
{010} Perfect
  
None observed
  
Mohs Hardness
Not Available
  
2.5
  
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
  
Na 3AlF 6Ulrich Henn and Claudio C.
  
Vivianite and Cryolite Chemical Formula
While comparing Vivianite and Cryolite 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 Vivianite and Cryolite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.
Vivianite and Cryolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.97 whereas that of Cryolite is 2.97.