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Purpurite
Purpurite

Cordierite
Cordierite



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Purpurite
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Cordierite

Purpurite and Cordierite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.2-3.4
2.57-2.66
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Subconchoidal, Conchoidal, Brittle
1.6 Cleavage
[100] [001] perfect
Fair on {100}, poor on {001} and {010}
1.7 Mohs Hardness
4-4.5
7-7.5
1.8 Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Mg2Al4Si5O18

Purpurite and Cordierite Chemical Formula

While comparing Purpurite 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 Purpurite and Cordierite chemical formula.

  • Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Purpurite and Cordierite Specific Gravity

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