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Atacamite
Atacamite

Alunite
Alunite



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Atacamite
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Alunite

Atacamite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.745-3.776
Conchoidal
Perfect on {010}, fair on {101}
3-3.5
Cu2Cl(OH)3
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Atacamite and Alunite Chemical Formula

While comparing Atacamite 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 Atacamite and Alunite chemical formula.

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Atacamite and Alunite Specific Gravity

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