Magnesite and Cinnabar Physical Properties

Magnesite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Brittle

Slightly sectile

1.2 Solubility

Effervesces in hot HCl

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

1.3 Durability

Not Available

1.4 Specific Gravity

2.92-3.122

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

[10 1 1] perfect

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

3.5-4.52-2.5

2 10

1.8 Chemical Composition

MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Magnesite and Cinnabar Chemical Formula

While comparing Magnesite 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 Magnesite and Cinnabar chemical formula.

Chemical formula of Magnesite- MgCO 3Michael 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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Magnesite and Cinnabar Specific Gravity

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