Franklinite and Cinnabar Physical Properties

Franklinite

Cinnabar

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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

5.05-5.222

1 7.18

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Fracture

Uneven

Cleavage

None

Prismatic {10 1 0}, perfect

Mohs Hardness

5.5-62-2.5

2 10

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Chemical Composition

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

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

Franklinite and Cinnabar Chemical Formula

While comparing Franklinite 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 Franklinite and Cinnabar chemical formula.

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

Compare Red Gemstones

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Franklinite Vs Microlite

Franklinite Vs Mimetite

Franklinite and Cinnabar Specific Gravity

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