Phlogopite and Gahnospinel Physical Properties
Tenacity
Tough
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.78-2.85
  
3.65-4.55
  
Fracture
None, Uneven
  
ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect basal (001)
  
None, but may exhibit slight parting
  
Mohs Hardness
2-2.5
  
7.5-8
  
Chemical Composition
Not Available
  
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
  
Phlogopite and Gahnospinel Chemical Formula
While comparing Phlogopite and Gahnospinel 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 Gahnospinel chemical formula.
>- Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Phlogopite and Gahnospinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phlogopite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.