Vivianite 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
2.64-2.70
2
Fracture
(e.g. graphite).
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
{010} Perfect
Prismatic {10 1 0}, perfect
Mohs Hardness
Not Available
2-2.5
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Cinnabar Chemical Formula
While comparing Vivianite 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 Vivianite and Cinnabar chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2 whereas that of Cinnabar is 2.