Stibiotantalite and Umbalite Physical Properties

Stibiotantalite

Umbalite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.62-4.33

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

{???} Perfect

Not Available

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Stibiotantalite and Umbalite Chemical Formula

While comparing Stibiotantalite and Umbalite 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 Stibiotantalite and Umbalite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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Stibiotantalite and Umbalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.