Poudretteite and Cinnabar Physical Properties
Tenacity
Brittle
Slightly sectile
Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
Not Available
Not Available
Specific Gravity
2.51-2.53
2
Fracture
Conchoidal, Splintery
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
None
Prismatic {10 1 0}, perfect
Chemical Composition
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Poudretteite and Cinnabar Chemical Formula
While comparing Poudretteite and Cinnabar 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 Poudretteite and Cinnabar chemical formula.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Poudretteite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Poudretteite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2 whereas that of Cinnabar is 2.