Pollucite and Spinel Physical Properties
Tenacity
Brittle
Not Available
Solubility
Readily soluble in HF
none
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
3.64-3.66
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None observed
None, but may exhibit slight parting
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
MgAl2O4
Pollucite and Spinel Chemical Formula
While comparing Pollucite and Spinel 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 Spinel 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 Spinel- MgAl2O4
Pollucite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.