Boracite and Cinnabar Physical Properties

Boracite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

Soluble

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

Durability

Specific Gravity

2.95-2.962

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

None

Prismatic {10 1 0}, perfect

Mohs Hardness

7-7.52-2.5

2 10

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Chemical Composition

Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Boracite and Cinnabar Chemical Formula

While comparing Boracite 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 Boracite and Cinnabar chemical formula.

Chemical formula of Boracite- Mg 3B 7O 13ClMichael 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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Boracite and Cinnabar Specific Gravity

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