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Zinnwaldite and Alunite Physical Properties


Alunite and Zinnwaldite Physical Properties


Physical Properties

Tenacity
Elastic   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.9-3.1   
2.6-2.9   

Fracture
Uneven   
Conchoidal, Uneven   

Cleavage
Perfect basal {001}   
On {0001}, perfect   

Mohs Hardness
3.5-4.0   
3.5-4   

Chemical Composition
Not Available   
KAl3(SO4)2(OH)6   

Optical Properties >>
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Zinnwaldite and Alunite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Alunite chemical formula.

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Zinnwaldite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zinnwaldite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zinnwaldite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Zinnwaldite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.

Green Gemstones

Green Gemstones


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