Pleonaste and Biotite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.80
  
2.7-3.3
  
Fracture
Not Available
  
Uneven, Even, Yellow, White
  
Cleavage
Not Available
  
Perfect on the {001}
  
Mohs Hardness
8
  
2.5-3.0
  
Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
  
K(Mg,Fe++)3[AlSi3O10(OH,F)2
  
Pleonaste and Biotite Chemical Formula
While comparing Pleonaste and Biotite 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 Pleonaste and Biotite chemical formula.
- Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Pleonaste and Biotite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pleonaste and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pleonaste and Biotite Optical Properties during the identification of gemstone. Specific gravity of Pleonaste is 2.7-3.3 whereas that of Biotite is 2.7-3.3.