Biotite and Goshenite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.7-3.3
  
2.60-2.90
  
Fracture
Uneven, Even, Yellow, White
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect on the {001}
  
3,1 basal
  
Mohs Hardness
2.5-3.0
  
7.5-8
  
Chemical Composition
K(Mg,Fe++)3[AlSi3O10(OH,F)2
  
Be3Al2SiO6
  
Biotite and Goshenite Chemical Formula
While comparing Biotite and Goshenite 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 Biotite and Goshenite chemical formula.
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
- Chemical formula of Goshenite- Be3Al2SiO6
Biotite and Goshenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Biotite and Goshenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Biotite and Goshenite Optical Properties during the identification of gemstone. Specific gravity of Biotite is 2.60-2.90 whereas that of Goshenite is 2.60-2.90.