Alunite and Zinnwaldite Physical Properties

Alunite and Zinnwaldite Chemical Formula

While comparing Alunite and Zinnwaldite 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 Zinnwaldite chemical formula.

• Chemical formula of Alunite- KAl3(SO4)2(OH)6
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Alunite and Zinnwaldite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Zinnwaldite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Zinnwaldite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.9-3.1 whereas that of Zinnwaldite is 2.9-3.1.