Almandine and Poudretteite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.30
2.51-2.53
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, Splintery
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Almandine and Poudretteite Chemical Formula
While comparing Almandine and Poudretteite 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 Almandine and Poudretteite chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Almandine and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.