Umbalite and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
3.05-3.21
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Not Available
Good on {110}, poor on {100}
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Umbalite and Andalusite Chemical Formula
While comparing Umbalite and Andalusite 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 Andalusite 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 Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Umbalite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.