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