Anhydrite and Cinnabar Physical Properties

Anhydrite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

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

Durability

Specific Gravity

2.90-2.982

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

Prismatic {10 1 0}, perfect

Mohs Hardness

3.52-2.5

2 10

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Chemical Composition

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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

Anhydrite and Cinnabar Chemical Formula

While comparing Anhydrite 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 Anhydrite and Cinnabar chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Anhydrite Vs Aragonite

Anhydrite Vs Augelite

Anhydrite Vs Axinite

Anhydrite and Cinnabar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2 whereas that of Cinnabar is 2.