Umbalite and Cordierite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
2.57-2.66
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Subconchoidal, Conchoidal, Brittle
Cleavage
Not Available
Fair on {100}, poor on {001} and {010}
Mohs Hardness
7-7.5
7-7.5
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Mg2Al4Si5O18
Umbalite and Cordierite Chemical Formula
While comparing Umbalite 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 Umbalite and Cordierite chemical formula.
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
- Chemical formula of Cordierite- Mg2Al4Si5O18
Umbalite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.