Riebeckite and Pollucite Physical Properties
Solubility
Not Available
Readily soluble in HF
Durability
Not Available
Not Available
Specific Gravity
3.28-3.44
2.86-2.94
Fracture
Uneven, Splintery, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
None observed
Mohs Hardness
5.0-6.0
6.5-7
Chemical Composition
Not Available
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Riebeckite and Pollucite Chemical Formula
While comparing Riebeckite 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 Riebeckite and Pollucite chemical formula.
>- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Riebeckite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Riebeckite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.