Hibonite and Biotite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.84
  
2.7-3.3
  
Fracture
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Uneven, Even, Yellow, White
  
Cleavage
{0001} good, {10 1 0} parting
  
Perfect on the {001}
  
Mohs Hardness
7.5-8
  
2.5-3.0
  
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
  
K(Mg,Fe++)3[AlSi3O10(OH,F)2
  
Hibonite and Biotite Chemical Formula
While comparing Hibonite 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 Hibonite and Biotite chemical formula.
- Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
- Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2
Hibonite and Biotite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hibonite and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Biotite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 2.7-3.3 whereas that of Biotite is 2.7-3.3.