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Goethite
Goethite

Lazurite
Lazurite



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Goethite
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Lazurite

Goethite and Lazurite 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
Soluble
-
2.75
Uneven, Conchoidal
Imperfect on {110}
5.5
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Goethite and Lazurite Chemical Formula

While comparing Goethite and Lazurite 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 Lazurite chemical formula.

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Goethite and Lazurite Specific Gravity

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