Umbalite and Variscite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
2.42-2.58
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Not Available
[010] perfect
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
AlPO4 · 2(H2O)
Umbalite and Variscite Chemical Formula
While comparing Umbalite and Variscite 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 Variscite 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 Variscite- AlPO4 · 2(H2O)
Umbalite and Variscite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.