Pollucite and Alunite Physical Properties

Pollucite and Alunite Chemical Formula

While comparing Pollucite 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 Pollucite and Alunite chemical formula.

• Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
• Chemical formula of Alunite- KAl3(SO4)2(OH)6

Pollucite and Alunite Specific Gravity

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