Achroite and Spodumene Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
3.15-3.21
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Subconchoidal, Gemstones (2009)
Cleavage
Not Available
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
LiAlSi2O6
Achroite and Spodumene Chemical Formula
While comparing Achroite 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 Achroite and Spodumene chemical formula.
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Spodumene- LiAlSi2O6
Achroite and Spodumene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.