Epidote and Cinnabar Physical Properties
Tenacity
-
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Specific Gravity
3.25-3.50
2
Fracture
Conchoidal, Fibrous
Uneven
Cleavage
{001} perfect and {100} imperfect
Prismatic {10 1 0}, perfect
Chemical Composition
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Epidote and Cinnabar Chemical Formula
While comparing Epidote 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 Epidote and Cinnabar chemical formula.
- Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Epidote and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Epidote and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Epidote and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Epidote is 2 whereas that of Cinnabar is 2.