Brucite and Cinnabar Physical Properties

Brucite

Cinnabar

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Physical Properties

Tenacity

Sectile

Slightly sectile

Solubility

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

Durability

Specific Gravity

2.392

1 7.18

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Fracture

Irregular

Uneven

Cleavage

Perfect on {0001}

Prismatic {10 1 0}, perfect

Mohs Hardness

2.52-2.5

2 10

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Chemical Composition

Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Brucite and Cinnabar Chemical Formula

While comparing Brucite 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 Brucite and Cinnabar chemical formula.

Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Brucite Vs Common Opal

Brucite Vs Cordierite Iolite

Brucite Vs Covellite

Brucite and Cinnabar Specific Gravity

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