Gypsum and Cinnabar Physical Properties
Tenacity
Flexible
Slightly sectile
Solubility
Soluble
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
2.20-2.40
2
Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Perfect on {010}, distinct on {100}
Prismatic {10 1 0}, perfect
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gypsum and Cinnabar Chemical Formula
While comparing Gypsum 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 Gypsum and Cinnabar chemical formula.
- Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gypsum and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gypsum and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 2 whereas that of Cinnabar is 2.