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Gahnite
Gahnite

Povondraite
Povondraite



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Gahnite
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Povondraite

Gahnite and Povondraite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
3.26
Uneven
None
-9999
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Gahnite and Povondraite Chemical Formula

While comparing Gahnite and Povondraite 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 Gahnite and Povondraite chemical formula.

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Gahnite and Povondraite Specific Gravity

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