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Witherite
Witherite

Alunite
Alunite



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Witherite
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Alunite

Witherite and Alunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.27-4.35
Conchoidal
{010} Distinct
3-3.5
BaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
Brittle
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Witherite and Alunite Chemical Formula

While comparing Witherite 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 Witherite and Alunite chemical formula.

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Witherite and Alunite Specific Gravity

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