Nuummite and Erythrite Physical Properties
Tenacity
Not Available
  
Sectile
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.18-3.37
  
3.06
  
Fracture
Conchoidal
  
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
  
Cleavage
Perfect on 210
  
Perfect on {010}; poor on {100} and { 1 02}.
  
Mohs Hardness
5.5-6
  
Not Available
  
Chemical Composition
Not Available
  
Co3(AsO4)2•8(H2O)
  
Nuummite and Erythrite Chemical Formula
While comparing Nuummite and Erythrite 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 Nuummite and Erythrite chemical formula.
>- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Nuummite and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nuummite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nuummite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Nuummite is 3.06 whereas that of Erythrite is 3.06.