Pollucite and Sodalite Physical Properties
Solubility
Readily soluble in HF
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
2.15-2.40
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
Cleavage
None observed
Poor on {110}
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Na8Al6Si6O24Cl2
Pollucite and Sodalite Chemical Formula
While comparing Pollucite and Sodalite 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 Sodalite 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 Sodalite- Na8Al6Si6O24Cl2
Pollucite and Sodalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Sodalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Sodalite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.15-2.40 whereas that of Sodalite is 2.15-2.40.