Humite and Cinnabar Physical Properties

Humite

Cinnabar

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Physical Properties

Tenacity

Brittle

Slightly sectile

Solubility

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

Durability

Specific Gravity

3.20-3.322

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

Poor

Prismatic {10 1 0}, perfect

Mohs Hardness

6-6.52-2.5

2 10

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Chemical Composition

(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Humite and Cinnabar Chemical Formula

While comparing Humite 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 Humite and Cinnabar chemical formula.

Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,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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Humite and Cinnabar Specific Gravity

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