Neptunite and Chrome Tourmaline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.19-3.23
2.85-3.35
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
ConchoidalArthur Thomas, Gemstones (2009)
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Tourmaline is a series of several different minerals with unique chemical formulas.
Neptunite and Chrome Tourmaline Chemical Formula
While comparing Neptunite and Chrome Tourmaline 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 Neptunite and Chrome Tourmaline chemical formula.
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Chrome Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas.
Neptunite and Chrome Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Neptunite and Chrome Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Chrome Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 2.85-3.35 whereas that of Chrome Tourmaline is 2.85-3.35.