Cinnabar and Brucite Physical Properties

Cinnabar

Brucite

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1 Physical Properties

1.1 Tenacity

Slightly sectile

Sectile

1.2 Solubility

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

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

22.39

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones (2009), Brittle

Irregular

1.6 Cleavage

Prismatic {10 1 0}, perfect

Perfect on {0001}

1.7 Mohs Hardness

2-2.52.5

2 10

1.8 Chemical Composition

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

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

Cinnabar and Brucite Chemical Formula

While comparing Cinnabar and Brucite 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 Brucite chemical formula.

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

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Cinnabar and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Brucite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 2.39 whereas that of Brucite is 2.39.