Gahnite and Cinnabar Physical Properties
Tenacity
Not Available
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
4.00-4.62
2
Fracture
Conchoidal, Uneven
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Indistinct parting on [111]
Prismatic {10 1 0}, perfect
Mohs Hardness
7.5-8
2-2.5
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gahnite and Cinnabar Chemical Formula
While comparing Gahnite 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 Gahnite and Cinnabar chemical formula.
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Gahnite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gahnite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 2 whereas that of Cinnabar is 2.