Rutile and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Insoluble in acids
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.20-4.30
3.20-3.26
Fracture
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Splintery
Cleavage
{110} good, 100 moderate, parting on {092} and {011}
{010} perfect
Mohs Hardness
6-6.5
6-7.5
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Rutile and Sillimanite Chemical Formula
While comparing Rutile and Sillimanite 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 Rutile and Sillimanite chemical formula.
- Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Rutile and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rutile and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Rutile is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.