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Hercynite and Gahnite Physical Properties


Gahnite and Hercynite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.39   
4.00-4.62   

Fracture
ConchoidalGemdat.org, Uneven   
Conchoidal, Uneven   

Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct   
Indistinct parting on [111]   

Mohs Hardness
7.5-8   
7.5-8   

Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Hercynite and Gahnite Chemical Formula

While comparing Hercynite 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 Hercynite and Gahnite chemical formula.

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Hercynite and Gahnite Specific Gravity

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

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