Petalite and Spodumene Physical Properties
Solubility
insoluble
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.40
3.15-3.21
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Uneven, Subconchoidal, Gemstones (2009)
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiAlSi2O6
Petalite and Spodumene Chemical Formula
While comparing Petalite 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 Petalite and Spodumene chemical formula.
- Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Spodumene- LiAlSi2O6
Petalite and Spodumene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Petalite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Petalite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.