Covellite and Goethite Physical Properties

Covellite

Goethite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.6-4.764.27-4.29

1 7.18

1.5 Fracture

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

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

1.6 Cleavage

Perfect on {0001}

Perfect {010}

1.7 Mohs Hardness

Not Available5-5.5

2 10

1.8 Chemical Composition

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

FeO(OH)Arthur Thomas , Gemstones (2009)

Covellite and Goethite Chemical Formula

While comparing Covellite 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 Covellite and Goethite chemical formula.

Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Compare Blue Gemstones

Covellite Vs Fluorapatite

Covellite Vs Elbaite

Covellite Vs Falcons Eye

Covellite and Goethite Specific Gravity

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