Sillimanite and Xonotlite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.71-2.72
Fracture
Splintery
Handbook of mineralogy (2001), Difficult, Fibrous
Cleavage
{010} perfect
{???} Good
Mohs Hardness
6-7.5
6-6.5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Sillimanite and Xonotlite Chemical Formula
While comparing Sillimanite and Xonotlite 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 Xonotlite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Xonotlite- Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Sillimanite and Xonotlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Xonotlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Xonotlite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.71-2.72 whereas that of Xonotlite is 2.71-2.72.