Umbalite and Pleonaste Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
3.80
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Not Available
Cleavage
Not Available
Not Available
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Umbalite and Pleonaste Chemical Formula
While comparing Umbalite and Pleonaste 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 Pleonaste 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 Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Umbalite and Pleonaste Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 3.80 whereas that of Pleonaste is 3.80.