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Goethite
Goethite

Angelite
Angelite



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Goethite
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Angelite

Goethite and Angelite 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)
 
-
-
-
-9999
-
Perfect
3.5
CaSO4·2H2O

Goethite and Angelite Chemical Formula

While comparing Goethite and Angelite 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 Angelite chemical formula.

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Goethite and Angelite Specific Gravity

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