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Covellite
Covellite

Gahnite
Gahnite



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Covellite
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Gahnite

Covellite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Flexible
-
-
4.6-4.76
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Perfect on {0001}
-9999
CuSMichael O’Donoghue , Gems, Sixth edition (2006) More from other references
 
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4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Covellite and Gahnite Chemical Formula

While comparing Covellite 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 Covellite and Gahnite chemical formula.

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Covellite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Covellite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite Vs Gahnite during the identification of gemstone. Specific gravity of Covellite is whereas that of Gahnite is .