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Alunite
Alunite

Williamsite
Williamsite



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Alunite
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Williamsite

Alunite and Williamsite Physical Properties

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
 
-
-
-
2.51-2.63
Conchoidal
Perfect
4
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Alunite and Williamsite Chemical Formula

While comparing Alunite and Williamsite 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 Williamsite chemical formula.

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Alunite and Williamsite Specific Gravity

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