Stibiotantalite and Bertrandite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.59-2.60
  
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Brittle, Metallic, Brittle, Metallic
  
Cleavage
{???} Perfect
  
{001} Perfect, {110} Distinct, {101} Distinct
  
Mohs Hardness
5.5-6
  
6-7
  
Chemical Composition
SbTaO 4Ulrich Henn and Claudio C.
  
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Stibiotantalite and Bertrandite Chemical Formula
While comparing Stibiotantalite and Bertrandite 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 Stibiotantalite and Bertrandite chemical formula.
- Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Stibiotantalite and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.