Tourmaline and Poudretteite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
2.51-2.53
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Splintery
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Tourmaline and Poudretteite Chemical Formula
While comparing Tourmaline 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 Tourmaline and Poudretteite chemical formula.
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Tourmaline and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.