Phlogopite and Fibrolite Physical Properties
Tenacity
Tough
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.78-2.85
  
3.14-3.25
  
Fracture
None, Uneven
  
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect basal (001)
  
Not Available
  
Mohs Hardness
2-2.5
  
6-7
  
Chemical Composition
Not Available
  
Al 2SiO 5Arthur Thomas , Gemstones (2009)
  
Phlogopite and Fibrolite Chemical Formula
While comparing Phlogopite and Fibrolite 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 Phlogopite and Fibrolite chemical formula.
>- Chemical formula of Fibrolite- Al 2SiO 5Arthur Thomas , Gemstones (2009)
Phlogopite and Fibrolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phlogopite and Fibrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Fibrolite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.14-3.25 whereas that of Fibrolite is 3.14-3.25.