Elbaite and Cinnabar Physical Properties

Elbaite

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

2.90-3.102

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

Poor/indistinct on {1120} and {1011}

Prismatic {10 1 0}, perfect

Mohs Hardness

72-2.5

2 10

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Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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

Elbaite and Cinnabar Chemical Formula

While comparing Elbaite 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 Elbaite and Cinnabar chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Elbaite and Cinnabar Specific Gravity

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