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Goethite
Goethite

Cuprite
Cuprite



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Goethite
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Cuprite

Goethite and Cuprite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
HCl soluble
-
4.27-4.29
Uneven
Perfect {010}
5-5.5
FeO(OH)Arthur Thomas , Gemstones (2009)
 
Brittle
-
-
5.85-6.15
Conchoidal
Fair in four directions forming octahedrons
3.5-4
Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Goethite and Cuprite Chemical Formula

While comparing Goethite and Cuprite 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 Goethite and Cuprite chemical formula.

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Goethite and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite Vs Cuprite during the identification of gemstone. Specific gravity of Goethite is whereas that of Cuprite is .