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Norbergite
Norbergite

Alunite
Alunite



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Norbergite
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Alunite

Norbergite and Alunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.177
Uneven, Conchoidal
{???} Distinct
6-6.5
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Norbergite and Alunite Chemical Formula

While comparing Norbergite and Alunite 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 Norbergite and Alunite chemical formula.

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Norbergite and Alunite Specific Gravity

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