Rutile and Goethite Physical Properties

Rutile

Goethite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Insoluble in acids

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.20-4.304.27-4.29

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

{110} good, 100 moderate, parting on {092} and {011}

Perfect {010}

1.7 Mohs Hardness

6-6.55-5.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

FeO(OH)Arthur Thomas , Gemstones (2009)

Rutile and Goethite Chemical Formula

While comparing Rutile 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 Rutile and Goethite chemical formula.

Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Rutile and Goethite Specific Gravity

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