Austinite and Cinnabar Physical Properties
Tenacity
Brittle
Slightly sectile
Solubility
Easily soluble in cold dilute HCl
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
Not Available
Not Available
Fracture
Brittle, Uneven, Brittle, Uneven
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Good in two directions parallel to the prism faces {110}
Prismatic {10 1 0}, perfect
Mohs Hardness
4-4.5
2-2.5
Chemical Composition
CaZn(AsO4)(OH)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Cinnabar Chemical Formula
While comparing Austinite 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 Austinite and Cinnabar chemical formula.
- Chemical formula of Austinite- CaZn(AsO4)(OH)
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Austinite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Austinite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2 whereas that of Cinnabar is 2.