Aragonite and Cinnabar Physical Properties
Tenacity
Brittle
Slightly sectile
Solubility
Dilute acid
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
2.93-2.96
2
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Distinct on {010}, imperfect {110} and {011}
Prismatic {10 1 0}, perfect
Mohs Hardness
3.5-4
2-2.5
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Aragonite and Cinnabar Chemical Formula
While comparing Aragonite 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 Aragonite and Cinnabar chemical formula.
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Aragonite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Aragonite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2 whereas that of Cinnabar is 2.