Pietersite and Cordierite Physical Properties

Pietersite

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.57-2.66

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

57-7.5

2 10

1.8 Chemical Composition

Not Available

Mg2Al4Si5O18

Pietersite and Cordierite Chemical Formula

While comparing Pietersite 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 Pietersite and Cordierite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18

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Pietersite and Cordierite Specific Gravity

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