Rhodochrosite and Cinnabar Physical Properties

Rhodochrosite

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

3.0-3.32

1 7.18

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Uneven, Uneven, Gemstones (2009), Brittle

1.6 Cleavage

On {10 1 1} perfect; parting on {10 1 2}

Prismatic {10 1 0}, perfect

1.7 Mohs Hardness

3.5-42-2.5

2 10

1.8 Chemical Composition

MnCO₃

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

Rhodochrosite and Cinnabar Chemical Formula

While comparing Rhodochrosite 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 Rhodochrosite and Cinnabar chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Rhodochrosite and Cinnabar Specific Gravity

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