Stibiotantalite and Goethite Physical Properties

Stibiotantalite

Goethite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available4.27-4.29

1 7.18

1.5 Fracture

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

Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).

1.6 Cleavage

{???} Perfect

Perfect {010}

1.7 Mohs Hardness

5.5-65-5.5

2 10

1.8 Chemical Composition

SbTaO 4Ulrich Henn and Claudio C.

FeO(OH)Arthur Thomas , Gemstones (2009)

Stibiotantalite and Goethite Chemical Formula

While comparing Stibiotantalite and Goethite 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 Goethite chemical formula.

Chemical formula of Stibiotantalite- SbTaO 4Ulrich Henn and Claudio C.
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Stibiotantalite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stibiotantalite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stibiotantalite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Stibiotantalite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.