Riebeckite and Hollandite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.28-3.44
  
5.05
  
Fracture
Uneven, Splintery, Brittle
  
Brittle, Metallic
  
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
  
Distinct / Good, Prismatic
  
Mohs Hardness
5.0-6.0
  
4-6
  
Chemical Composition
Not Available
  
Ba(Mn++++,Mn++)8O16
  
Riebeckite and Hollandite Chemical Formula
While comparing Riebeckite and Hollandite 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 Riebeckite and Hollandite chemical formula.
>- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Riebeckite and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riebeckite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 5.05 whereas that of Hollandite is 5.05.