Willemite and Stibiotantalite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.89-4.18
  
Not Available
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
  
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
{0001}, {11 2 0} imperfect
  
{???} Perfect
  
Mohs Hardness
5.5
  
5.5-6
  
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SbTaO 4Ulrich Henn and Claudio C.
  
Willemite and Stibiotantalite Chemical Formula
While comparing Willemite and Stibiotantalite 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 Willemite and Stibiotantalite chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Willemite and Stibiotantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Stibiotantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Stibiotantalite Optical Properties during the identification of gemstone. Specific gravity of Willemite is Not Available whereas that of Stibiotantalite is Not Available.