Umbalite and Stibiotantalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.62-4.33
Not Available
Fracture
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Not Available
{???} Perfect
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
SbTaO 4Ulrich Henn and Claudio C.
Umbalite and Stibiotantalite Chemical Formula
While comparing Umbalite and Stibiotantalite 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 Stibiotantalite 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 Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Umbalite and Stibiotantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Umbalite and Stibiotantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Stibiotantalite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is Not Available whereas that of Stibiotantalite is Not Available.