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Alunite
Alunite
☒

Nickeline
Nickeline
☒



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Alunite
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Nickeline

Alunite and Nickeline Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6
 
Brittle
-
-
-9999
Conchoidal, Uneven
{1010} Imperfect, {0001} Imperfect
5-5.5
NiAs

Alunite and Nickeline Chemical Formula

While comparing Alunite and Nickeline 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 Alunite and Nickeline chemical formula.

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Alunite and Nickeline Specific Gravity

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