Rhodochrosite and Purpurite Physical Properties

Rhodochrosite

Purpurite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

3.2-3.4

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

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

[100] [001] perfect

1.7 Mohs Hardness

3.5-4

4-4.5

1.8 Chemical Composition

MnCO₃

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Rhodochrosite and Purpurite Chemical Formula

While comparing Rhodochrosite and Purpurite 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 Purpurite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Rhodochrosite and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.