Rubellite and Stibiotantalite Physical Properties

Rubellite

Stibiotantalite

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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

3.01-3.06

Not Available

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Not Available

{???} Perfect

1.7 Mohs Hardness

7-7.5

5.5-6

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

SbTaO 4Ulrich Henn and Claudio C.

Rubellite and Stibiotantalite Chemical Formula

While comparing Rubellite 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 Rubellite and Stibiotantalite chemical formula.

Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.

Compare Blue Gemstones

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Rubellite and Stibiotantalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Stibiotantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Stibiotantalite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is Not Available whereas that of Stibiotantalite is Not Available.