Tourmaline and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
3.05-3.21
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Indistinct
Good on {110}, poor on {100}
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Tourmaline and Andalusite Chemical Formula
While comparing Tourmaline and Andalusite 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 Andalusite 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 Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Tourmaline and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.