Schorl and Nuummite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.18-3.22
  
3.18-3.37
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Conchoidal
  
Cleavage
{1011} Indistinct
  
Perfect on 210
  
Mohs Hardness
Not Available
  
5.5-6
  
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
Not Available
  
Schorl and Nuummite Chemical Formula
While comparing Schorl and Nuummite 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 Schorl and Nuummite chemical formula.
- Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
>
Schorl and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Schorl and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.