Gahnospinel and Hollandite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.65-4.55
  
5.05
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009)
  
Brittle, Metallic
  
Cleavage
None, but may exhibit slight parting
  
Distinct / Good, Prismatic
  
Mohs Hardness
7.5-8
  
4-6
  
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
  
Ba(Mn++++,Mn++)8O16
  
Gahnospinel and Hollandite Chemical Formula
While comparing Gahnospinel 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 Gahnospinel and Hollandite chemical formula.
- Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Gahnospinel and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnospinel and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 5.05 whereas that of Hollandite is 5.05.