Crocoite and Cinnabar Physical Properties

Crocoite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Not Available

Slightly sectile

1.2 Solubility

Not Available

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

1.3 Durability

Not Available

1.4 Specific Gravity

5.90-6.10

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

{110} Distinct, {001} Indistinct, {100} Indistinct

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

2.5-3

2-2.5

1.8 Chemical Composition

PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Crocoite and Cinnabar Chemical Formula

While comparing Crocoite 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 Crocoite and Cinnabar chemical formula.

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

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Crocoite and Cinnabar Specific Gravity

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