Cinnabar and Franklinite Physical Properties

Cinnabar

Franklinite

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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

25.05-5.22

1 7.18

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Fracture

Uneven

Cleavage

Prismatic {10 1 0}, perfect

None

Mohs Hardness

2-2.55.5-6

2 10

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Chemical Composition

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

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Cinnabar and Franklinite Chemical Formula

While comparing Cinnabar and Franklinite 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 Cinnabar and Franklinite chemical formula.

Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Cinnabar and Franklinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cinnabar and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.