Sillimanite and Hibschite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
3.05-3.08
Fracture
Splintery
Uneven, Uneven, Irregular, Management Team (2012), Conchoidal, Brittle
Cleavage
{010} perfect
None
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)
Sillimanite and Hibschite Chemical Formula
While comparing Sillimanite and Hibschite 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 Hibschite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Hibschite- Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)
Sillimanite and Hibschite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Hibschite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Hibschite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.05-3.08 whereas that of Hibschite is 3.05-3.08.