Tourmaline and Fayalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
4.392
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Indistinct
{010} moderate, {100} imperfect
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Tourmaline and Fayalite Chemical Formula
While comparing Tourmaline and Fayalite 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 Fayalite 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 Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Tourmaline and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 4.392 whereas that of Fayalite is 4.392.