Bustamite and Anhydrite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Partly soluble in HCl.
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.32-3.43
  
2.90-2.98
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
  
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
  
Mohs Hardness
5.5-6
  
3.5
  
Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
Bustamite and Anhydrite Chemical Formula
While comparing Bustamite and Anhydrite 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 Bustamite and Anhydrite chemical formula.
- Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Bustamite and Anhydrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bustamite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.