Umbalite and Almandine Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
3.95-4.30
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Not Available
none
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)
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Umbalite and Almandine Chemical Formula
While comparing Umbalite and Almandine 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 Almandine 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 Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Umbalite and Almandine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.