Bertrandite and Cinnabar Physical Properties

Bertrandite

Cinnabar

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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

2.59-2.602

1 7.18

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Fracture

Uneven

Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

Prismatic {10 1 0}, perfect

Mohs Hardness

6-72-2.5

2 10

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Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Bertrandite and Cinnabar Chemical Formula

While comparing Bertrandite 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 Bertrandite and Cinnabar chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bertrandite and Cinnabar Specific Gravity

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