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