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Goethite
Goethite

Lazulite
Lazulite



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Goethite
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Lazulite

Goethite and Lazulite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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HCl soluble
-
4.27-4.29
Uneven
Perfect {010}
5-5.5
FeO(OH)Arthur Thomas , Gemstones (2009)
 
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-
-
3.04-3.17
Uneven
{001} Indistinct, {???} Indistinct
5.5
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Goethite and Lazulite Chemical Formula

While comparing Goethite and Lazulite 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 Lazulite chemical formula.

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Goethite and Lazulite Specific Gravity

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