Stichtite and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.11-2.20
3.20-3.26
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Splintery
Cleavage
Perfect on {0001}
{010} perfect
Mohs Hardness
Not Available
6-7.5
Chemical Composition
Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Stichtite and Sillimanite Chemical Formula
While comparing Stichtite 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 Stichtite and Sillimanite chemical formula.
- Chemical formula of Stichtite- Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Stichtite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Stichtite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stichtite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Stichtite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.