Alunite and Smithsonite Physical Properties

Alunite and Smithsonite Chemical Formula

While comparing Alunite and Smithsonite 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 Smithsonite chemical formula.

• Chemical formula of Alunite- KAl3(SO4)2(OH)6
• Chemical formula of Smithsonite- ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alunite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alunite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.