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Hollandite and Gahnospinel Physical Properties


Gahnospinel and Hollandite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.05   
3.65-4.55   

Fracture
Brittle, Metallic   
ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Distinct / Good, Prismatic   
None, but may exhibit slight parting   

Mohs Hardness
4-6   
7.5-8   

Chemical Composition
Ba(Mn++++,Mn++)8O16   
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)   

Optical Properties >>
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Hollandite and Gahnospinel Chemical Formula

While comparing Hollandite and Gahnospinel 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 Gahnospinel chemical formula.

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Hollandite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.

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Grey Gemstones


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