Cordierite Iolite and Purpurite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.56-2.66
3.2-3.4
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Not Available
[100] [001] perfect
Mohs Hardness
7-7.5
4-4.5
Chemical Composition
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Cordierite Iolite and Purpurite Chemical Formula
While comparing Cordierite Iolite 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 Cordierite Iolite and Purpurite chemical formula.
- Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Cordierite Iolite and Purpurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.