Cinnabar and Epidote Physical Properties

Cinnabar

Epidote

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Physical Properties

Tenacity

Slightly sectile

Solubility

1.04 x 10⁻²⁵ g per 100 ml water (Ksp at 25°C = 2 x 10⁻³²)

Durability

Specific Gravity

23.25-3.50

1 7.18

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Fracture

Uneven

Conchoidal, Fibrous

Cleavage

Prismatic {10 1 0}, perfect

{001} perfect and {100} imperfect

Mohs Hardness

2-2.56-7

2 10

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Chemical Composition

HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Cinnabar and Epidote Chemical Formula

While comparing Cinnabar and Epidote 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 Cinnabar and Epidote chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Epidote- CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Cinnabar and Epidote Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Epidote Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Epidote Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.25-3.50 whereas that of Epidote is 3.25-3.50.