Purpurite and Cordierite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
2.57-2.66
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Subconchoidal, Conchoidal, Brittle
Cleavage
[100] [001] perfect
Fair on {100}, poor on {001} and {010}
Mohs Hardness
4-4.5
7-7.5
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.