Stibiotantalite and Verdelite Physical Properties

Stibiotantalite

Verdelite

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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 Available2.90-3.40

1 7.18

1.5 Fracture

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

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

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.

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.

Stibiotantalite and Verdelite Chemical Formula

While comparing Stibiotantalite and Verdelite 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 Verdelite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Verdelite- 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.

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Stibiotantalite and Verdelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.