Sillimanite and Tugtupite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.30-2.60
Fracture
Splintery
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{010} perfect
{111} Imperfect
Mohs Hardness
6-7.5
5.5-6
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Tugtupite Chemical Formula
While comparing Sillimanite and Tugtupite 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 Tugtupite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Tugtupite- Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Tugtupite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Tugtupite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Tugtupite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.30-2.60 whereas that of Tugtupite is 2.30-2.60.