Pollucite and Spodumene Physical Properties
Solubility
Readily soluble in HF
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
3.15-3.21
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Subconchoidal, Gemstones (2009)
Cleavage
None observed
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
LiAlSi2O6
Pollucite and Spodumene Chemical Formula
While comparing Pollucite and Spodumene 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 Spodumene 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 Spodumene- LiAlSi2O6
Pollucite and Spodumene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.