Hollandite and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.05
  
3.49-3.57
  
Fracture
Brittle, Metallic
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Distinct / Good, Prismatic
  
[001] Perfect
  
Mohs Hardness
4-6
  
8
  
Chemical Composition
Ba(Mn++++,Mn++)8O16
  
Al2SiO4(F,OH)2
  
Hollandite and Topaz Chemical Formula
While comparing Hollandite and Topaz 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 Hollandite and Topaz chemical formula.
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Hollandite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hollandite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.