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