Cinnabar and Sillimanite Physical Properties
Tenacity
Slightly sectile
Tough
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Not Available
Durability
Not Available
Not Available
Specific Gravity
2
3.20-3.26
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
Splintery
Cleavage
Prismatic {10 1 0}, perfect
{010} perfect
Mohs Hardness
2-2.5
6-7.5
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Cinnabar and Sillimanite Chemical Formula
While comparing Cinnabar 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 Cinnabar and Sillimanite chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Cinnabar and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.