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Legrandite and Gahnite Physical Properties


Gahnite and Legrandite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.98-4.04   
4.00-4.62   

Fracture
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle   
Conchoidal, Uneven   

Cleavage
Imperfect, poor one {100}   
Indistinct parting on [111]   

Mohs Hardness
4.5-5   
7.5-8   

Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Legrandite and Gahnite Chemical Formula

While comparing Legrandite 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 Legrandite and Gahnite chemical formula.

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Legrandite and Gahnite Specific Gravity

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

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