Magnesite and Cinnabar Physical Properties
Tenacity
Brittle
Slightly sectile
Solubility
Effervesces in hot HCl
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
2.92-3.12
2
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
[10 1 1] perfect
Prismatic {10 1 0}, perfect
Mohs Hardness
3.5-4.5
2-2.5
Chemical Composition
MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Magnesite and Cinnabar Chemical Formula
While comparing Magnesite 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 Magnesite and Cinnabar chemical formula.
- Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Magnesite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Magnesite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Magnesite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Magnesite is 2 whereas that of Cinnabar is 2.