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Smithsonite
Smithsonite

Alunite
Alunite



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Smithsonite
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Alunite

Smithsonite and Alunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
4.00-4.65
Uneven, Sub-Conchoidal
Perfect on [1011]
5-5.5
ZnCO 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

Smithsonite and Alunite Chemical Formula

While comparing Smithsonite 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 Smithsonite and Alunite chemical formula.

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Smithsonite and Alunite Specific Gravity

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