Sillimanite and Stibiotantalite Physical Properties

Sillimanite

Stibiotantalite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.26

Not Available

1.5 Fracture

Splintery

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

1.6 Cleavage

{010} perfect

{???} Perfect

1.7 Mohs Hardness

6-7.5

5.5-6

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

SbTaO 4Ulrich Henn and Claudio C.

Sillimanite and Stibiotantalite Chemical Formula

While comparing Sillimanite 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 Sillimanite and Stibiotantalite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.

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Sillimanite and Stibiotantalite Specific Gravity

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