Adamite and Tantalite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.32-4.48
  
5.2
  
Fracture
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
{101}, good; {010}, poor
  
Good in one direction
  
Mohs Hardness
3.5
  
6-6.5
  
Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
  
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
  
Adamite and Tantalite Chemical Formula
While comparing Adamite 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 Adamite and Tantalite chemical formula.
- Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Adamite and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Adamite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Adamite is 5.2 whereas that of Tantalite is 5.2.