Pollucite and Allanite Physical Properties

Pollucite and Allanite Chemical Formula

While comparing Pollucite and Allanite 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 Allanite chemical formula.

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

Pollucite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.