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Alunite
Alunite

Mimetite
Mimetite



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Alunite
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Mimetite

Alunite and Mimetite 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
-
-
7.10
Conchoidal
[10 1 1] Imperfect
3.5
Pb 5(AsO 4) 3ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Mimetite Chemical Formula

While comparing Alunite and Mimetite 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 Mimetite chemical formula.

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Alunite and Mimetite Specific Gravity

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