Nuummite and Tantalite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.18-3.37
  
5.2
  
Fracture
Conchoidal
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect on 210
  
Good in one direction
  
Mohs Hardness
5.5-6
  
6-6.5
  
Chemical Composition
Not Available
  
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
  
Nuummite and Tantalite Chemical Formula
While comparing Nuummite and Tantalite 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 Tantalite chemical formula.
>- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Nuummite and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nuummite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nuummite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Nuummite is 5.2 whereas that of Tantalite is 5.2.