Hemimorphite and Alunite Physical Properties

Hemimorphite and Alunite Chemical Formula

While comparing Hemimorphite 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 Hemimorphite and Alunite chemical formula.

• Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Alunite- KAl3(SO4)2(OH)6

Hemimorphite and Alunite Specific Gravity

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