Rhodochrosite and Cordierite Physical Properties

Rhodochrosite

Cordierite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.0-3.3

2.57-2.66

1.5 Fracture

Uneven, Conchoidal, Conchoidal to uneven, Brittle

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

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

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

3.5-4

7-7.5

1.8 Chemical Composition

MnCO₃

Mg2Al4Si5O18

Rhodochrosite and Cordierite Chemical Formula

While comparing Rhodochrosite and Cordierite 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 Cordierite chemical formula.

Chemical formula of Rhodochrosite- MnCO₃
Chemical formula of Cordierite- Mg2Al4Si5O18

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Rhodochrosite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rhodochrosite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rhodochrosite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Rhodochrosite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.