Cinnabar and Gibbsite Physical Properties
Tenacity
Slightly sectile
Not Available
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
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
Fibrous, Difficult, Fibrous
Cleavage
Prismatic {10 1 0}, perfect
{001} Perfect
Mohs Hardness
2-2.5
2.5-3
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al(OH)3
Cinnabar and Gibbsite Chemical Formula
While comparing Cinnabar and Gibbsite 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 Gibbsite chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Gibbsite- Al(OH)3
Cinnabar and Gibbsite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Gibbsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Gibbsite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.35 whereas that of Gibbsite is 2.35.