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Povondraite
Povondraite
☒

Norbergite
Norbergite
☒



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Povondraite
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Norbergite

Povondraite and Norbergite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.26
Uneven
None
-9999
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
 
-
-
-
3.177
Uneven, Conchoidal
{???} Distinct
6-6.5
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Povondraite and Norbergite Chemical Formula

While comparing Povondraite and Norbergite 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 Povondraite and Norbergite chemical formula.

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Povondraite and Norbergite Specific Gravity

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