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Erythrite
Erythrite

Gahnite
Gahnite



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Erythrite
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Gahnite

Erythrite and Gahnite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Sectile
-
-
3.06
Sectile
Perfect on {010}; poor on {100} and { 1 02}.
-9999
Co3(AsO4)2•8(H2O)
 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Erythrite and Gahnite Chemical Formula

While comparing Erythrite 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 Erythrite and Gahnite chemical formula.

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Erythrite and Gahnite Specific Gravity

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