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Mottramite and Gahnite Physical Properties


Gahnite and Mottramite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.9   
4.00-4.62   

Fracture
Sub-Conchoidal, Brittle, Metallic   
Conchoidal, Uneven   

Cleavage
None observed   
Indistinct parting on [111]   

Mohs Hardness
3   
7.5-8   

Chemical Composition
Not Available   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Mottramite and Gahnite Chemical Formula

While comparing Mottramite and Gahnite 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 Mottramite and Gahnite chemical formula.

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Mottramite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.

Brown Gemstones

Brown Gemstones


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