Umbalite and Wavellite Physical Properties
Specific Gravity
3.62-4.33
2.36
Fracture
Uneven
Uneven, Subconchoidal, Fibrous
Cleavage
Indiscernible
[110] perfect, [101] good, [010] distinct
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Umbalite and Wavellite Chemical Formula
While comparing Umbalite and Wavellite 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 Wavellite 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 Wavellite- Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Umbalite and Wavellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Wavellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Wavellite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.36 whereas that of Wavellite is 2.36.