Cinnabar and Brookite Physical Properties
Tenacity
Slightly sectile
Brittle
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
3.87-4.14
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Prismatic {10 1 0}, perfect
Poor on {120}, in traces on {001}
Mohs Hardness
2-2.5
5.5-6
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cinnabar and Brookite Chemical Formula
While comparing Cinnabar and Brookite 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 Brookite chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cinnabar and Brookite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Brookite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.87-4.14 whereas that of Brookite is 3.87-4.14.