Pleonaste and Hibonite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.80
  
3.84
  
Fracture
Not Available
  
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
Not Available
  
{0001} good, {10 1 0} parting
  
Mohs Hardness
8
  
7.5-8
  
Chemical Composition
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
  
(Ca,Ce)(Al,Ti,Mg)12O19
  
Pleonaste and Hibonite Chemical Formula
While comparing Pleonaste and Hibonite 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 Hibonite chemical formula.
- Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
Pleonaste and Hibonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pleonaste and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pleonaste and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Pleonaste is 3.84 whereas that of Hibonite is 3.84.