Hibonite and Umbalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.84
3.62-4.33
Fracture
Subconchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Cleavage
{0001} good, {10 1 0} parting
Not Available
Mohs Hardness
7.5-8
7-7.5
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Hibonite and Umbalite Chemical Formula
While comparing Hibonite and Umbalite 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 Hibonite and Umbalite chemical formula.
- Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19
- Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Hibonite and Umbalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hibonite and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hibonite and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Hibonite is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.