Uvite and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.97-3.14
3.20-3.26
Fracture
Uneven, Conchoidal, Brittle
Splintery
Cleavage
{1011} Indistinct
{010} perfect
Mohs Hardness
Not Available
6-7.5
Chemical Composition
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Uvite and Sillimanite Chemical Formula
While comparing Uvite 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 Uvite and Sillimanite chemical formula.
- Chemical formula of Uvite- Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Uvite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Uvite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Uvite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Uvite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.