Hematite and Sillimanite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.00-5.30
3.20-3.26
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Splintery
Cleavage
None, may show partings on {0001} and {10 1 1}
{010} perfect
Chemical Composition
Fe 2O 3Arthur Thomas , Gemstones (2009)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Hematite and Sillimanite Chemical Formula
While comparing Hematite 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 Hematite and Sillimanite chemical formula.
- Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Hematite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hematite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.