Hematite and Cinnabar Physical Properties

Hematite

Cinnabar

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1 Physical Properties

1.1 Tenacity

Brittle

Slightly sectile

1.2 Solubility

Not Available

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

5.00-5.302

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

None, may show partings on {0001} and {10 1 1}

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

62-2.5

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

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

Hematite and Cinnabar Chemical Formula

While comparing Hematite 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 Hematite and Cinnabar chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hematite and Cinnabar Specific Gravity

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