Beudantite and Alunite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.48
  
2.6-2.9
  
Fracture
Brittle, Metallic, Brittle, Metallic
  
Conchoidal, Uneven
  
Cleavage
distinct; good on {0001}
  
On {0001}, perfect
  
Mohs Hardness
3.5-4.5
  
3.5-4
  
Chemical Composition
PbFe+++3(AsO4)(SO4)(OH)6
  
KAl3(SO4)2(OH)6
  
Beudantite and Alunite Chemical Formula
While comparing Beudantite and Alunite 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 Beudantite and Alunite chemical formula.
- Chemical formula of Beudantite- PbFe+++3(AsO4)(SO4)(OH)6
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Beudantite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Beudantite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beudantite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Beudantite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.