Stibiotantalite and Staurolite Physical Properties

Stibiotantalite

Staurolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.7-3.8

1 7.18

1.5 Fracture

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

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

{???} Perfect

Distinct on {010}

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Stibiotantalite and Staurolite Chemical Formula

While comparing Stibiotantalite and Staurolite 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 Staurolite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

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Stibiotantalite and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.