Grossular and Hollandite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.55-3.73
  
5.05
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Brittle, Metallic
  
Cleavage
none
  
Distinct / Good, Prismatic
  
Mohs Hardness
7-7.5
  
4-6
  
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Ba(Mn++++,Mn++)8O16
  
Grossular and Hollandite Chemical Formula
While comparing Grossular 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 Grossular and Hollandite chemical formula.
- Chemical formula of Grossular- Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Grossular and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grossular and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grossular and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Grossular is 5.05 whereas that of Hollandite is 5.05.